Mahārāja Pṛthu is an empowered incarnation with executive function.
(Srimad Bhagavatam------1:3:26------purport).

O brāhmaṇas, in the ninth incarnation, the Lord, prayed for by sages, accepted the body of a king (Pṛthu) who cultivated the land to yield various produces, and for that reason the earth was beautiful and attractive.
Before the advent of King Pṛthu, there was great havoc of maladministration due to the vicious life of the previous king, the father of Mahārāja Pṛthu. The intelligent class of men (namely the sages and the brāhmaṇas) not only prayed for the Lord to come down, but also dethroned the previous king. It is the duty of the king to be pious and thus look after the all-around welfare of the citizens. Whenever there is some negligence on the part of the king in discharging his duty, the intelligent class of men must dethrone him. The intelligent class of men, however, do not occupy the royal throne, because they have much more important duties for the welfare of the public. Instead of occupying the royal throne, they prayed for the incarnation of the Lord, and the Lord came as Mahārāja Pṛthu. Real intelligent men, or qualified brāhmaṇas, never aspire for political posts. Mahārāja Pṛthu excavated many produces from the earth, and thus not only did the citizens become happy to have such a good king, but the complete sight of the earth also became beautiful and attractive.
(Srimad Bhagavatam------1:3:14------translation and purport).

In the form of King Pṛthu, the Supreme Personality of Godhead has appeared through a part of His potency to protect the people of the world. The goddess of fortune is the constant companion of the Lord, and therefore she has incarnated partially as Arci to become King Pṛthu's queen.
In Bhagavad-gītā the Lord says that whenever one sees an extraordinary power, he should conclude that a specific partial representation of the Supreme Personality of Godhead is present. There are innumerable such personalities, but not all of them are direct viṣṇu-tattva plenary expansions of the Lord. Many living entities are classified among the śakti-tattvas. Such incarnations, empowered for specific purposes, are known as śaktyāveśa-avatāras. King Pṛthu was such a śaktyāveśa-avatāra of the Lord. Similarly, Arci, King Pṛthu's wife, was a śaktyāveśa-avatāra of the goddess of fortune.
(Srimad Bhagavatam------4:15:6------translation and purport).

Lord Brahmā, the master of the entire universe, arrived there accompanied by all the demigods and their chiefs. Seeing the lines of Lord Viṣṇu's palm on King Pṛthu's right hand and impressions of lotus flowers on the soles of his feet, Lord Brahmā could understand that King Pṛthu was a partial representation of the Supreme Personality of Godhead. One whose palm bears the sign of a disc, as well as other such lines, should be considered a partial representation or incarnation of the Supreme Lord.
There is a system by which one can detect an incarnation of the Supreme Personality of Godhead. Nowadays it has become a cheap fashion to accept any rascal as an incarnation of God, but from this incident we can see that Lord Brahmā personally examined the hands and feet of King Pṛthu for specific signs. In their prophecies the learned sages and brāhmaṇas accepted Pṛthu Mahārāja as a plenary partial expansion of the Lord. During the presence of Lord Kṛṣṇa, however, a king declared himself Vāsudeva, and Lord Kṛṣṇa killed him. Before accepting someone as an incarnation of God, one should verify his identity according to the symptoms mentioned in the śāstras. Without these symptoms the pretender is subject to be killed by the authorities for pretending to be an incarnation of God.
(Srimad Bhagavatam------4:15:9-10------translation and purport).

King Pṛthu said: O gentle sūta, māgadha and other devotee offering prayers, the qualities of which you have spoken are not distinct in me. Why then should you praise me for all these qualities when I do not shelter these features? I do not wish for these words meant for me to go in vain, but it is better that they be offered to someone else.
The prayers and praises by the sūta, māgadha and vandī all explained the godly qualities of Mahārāja Pṛthu, for he was a śaktyāveśa incarnation of the Supreme Personality of Godhead. Because the qualities were not yet manifest, however, King Pṛthu very humbly asked why the devotees should praise him with such exalted words. He did not want anyone to offer him prayers or glorify him unless he possessed the real qualities of which they spoke. The offering of prayers was certainly appropriate, for he was an incarnation of Godhead, but he warned that one should not be accepted as an incarnation of the Personality of Godhead without having the godly qualities. At the present moment there are many so-called incarnations of the Personality of Godhead, but these are merely fools and rascals whom people accept as incarnations of God although they have no godly qualities. King Pṛthu desired that his real characteristics in the future might justify such words of praise. Although there was no fault in the prayers offered, Pṛthu Mahārāja indicated that such prayers should not be offered to an unfit person who pretends to be an incarnation of the Supreme Personality of Godhead.
(Srimad Bhagavatam------4:15:22------translation and purport).

When there is no rainfall and the citizens are in great danger due to the scarcity of water, this royal Personality of Godhead will be able to supply rains exactly like the heavenly King Indra. Thus he will very easily be able to protect the citizens from drought.
King Pṛthu is very appropriately compared to the sun and the demigod Indra. King Indra of the heavenly planets is in charge of distributing water over the earth and other planetary systems. It is indicated that King Pṛthu would arrange for the distribution of rainfall personally if Indra failed to discharge his duty properly. Sometimes the King of heaven, Indra, would become angry at the inhabitants of the earth if they did not offer sacrifices to appease him. King Pṛthu, however, being an incarnation of the Supreme Personality of Godhead, did not depend on the mercy of the heavenly King. It is foretold herein that if there would be a scarcity of rain, King Pṛthu would manage to counteract the deficiency by virtue of his godly powers.
(Srimad Bhagavatam------4:16:8------translation and purport).

Others, who were as intelligent as King Pṛthu, also took the essence out of the earthly planet. Indeed, everyone took this opportunity to follow in the footsteps of King Pṛthu and get whatever he desired from the planet earth.
The planet earth is also called vasundharā. The word vasu means "wealth," and dharā means "one who holds." All creatures within the earth fulfill the necessities required for human beings, and all living entities can be taken out of the earth by the proper means. As suggested by the planet earth, and accepted and initiated by King Pṛthu, whatever is taken from the earth—either from the mines, from the surface of the globe or from the atmosphere—should always be considered the property of the Supreme Personality of Godhead and should be used for Yajña, Lord Viṣṇu.
(Srimad Bhagavatam------4:18:13------translation and purport).

King Pṛthu was dependent on the Supreme Personality of Godhead, who is known as Adhokṣaja. Because King Pṛthu Performed so many sacrifices, he was superhumanly enhanced by the mercy of the Supreme Lord. King Pṛthu's opulence, however, could not be tolerated by the King of heaven, Indra, who tried to impede the progress of his opulence.
In this verse there are three significant purposes expressed in the words adhokṣaja, bhagavān indraḥ and pṛthoḥ. Mahārāja Pṛthu is an incarnation of Viṣṇu, yet he is a great devotee of Lord Viṣṇu. Although an empowered incarnation of Lord Viṣṇu, he is nonetheless a living entity. As such, he must be a devotee of the Supreme Personality of Godhead. Although one is empowered by the Supreme Personality of Godhead and is an incarnation, he should not forget his eternal relationship with the Supreme Personality of Godhead. In Kali-yuga there are many self-made incarnations, rascals, who declare themselves to be the Supreme Personality of Godhead. The words bhagavān indraḥ indicate that a living entity can even be as exalted and powerful as King Indra, for even King Indra is an ordinary living entity in the material world and possesses the four defects of the conditioned soul. King Indra is described herein as bhagavān, which is generally used in reference to the Supreme Personality of Godhead. In this case, however, King Indra is addressed as bhagavān because he has so much power in his hands. Despite his becoming bhagavān, he is envious of the incarnation of God, Pṛthu Mahārāja. The defects of material life are so strong that due to contamination King Indra becomes envious of an incarnation of God.
We should try to understand, therefore, how a conditioned soul becomes fallen. The opulence of King Pṛthu was not dependent on material conditions.
(Srimad Bhagavatam------4:19:10------translation and purport).

When Pṛthu Mahārāja was performing the last horse sacrifice (aśvamedha-yajña), King Indra, invisible to everyone, stole the horse intended for sacrifice. He did this because of his great envy of King Pṛthu.
King Indra is known as śata-kratu, which indicates that he has performed one hundred horse sacrifices (aśvamedha-yajña). We should know, however, that the animals sacrificed in the yajña were not killed. If the Vedic mantras were properly pronounced during the sacrifice, the animal sacrificed would come out again with a new life. That is the test for a successful yajña. When King Pṛthu was performing one hundred yajñas, Indra became very envious because he did not want anyone to excel him. Being an ordinary living entity, he became envious of King Pṛthu, and, making himself invisible, he stole the horse and thus impeded the yajña performance.
(Srimad Bhagavatam------4:19:11------translation and purport).

"Let there be only ninety-nine sacrificial performances for Mahārāja Pṛthu," Lord Brahmā concluded. Lord Brahmā then turned towards Mahārāja Pṛthu and informed him that since he was thoroughly aware of the path of liberation, what was the use in performing more sacrifices?
Lord Brahmā came down to pacify King Pṛthu regarding his continual performance of one hundred sacrifices. King Pṛthu was determined to perform one hundred sacrifices, and King Indra took this very seriously because Indra himself was known as the performer of one hundred sacrifices. Just as it is the nature of all living entities within this material world to become envious of their competitors, King Indra, although King of heaven, was also envious of King Pṛthu and therefore wanted to stop him from performing one hundred sacrifices. Actually there was great competition, and King Indra, to satisfy his senses, began to invent so many irreligious systems to obstruct King Pṛthu. To stop these irreligious inventions, Lord Brahmā personally appeared in the sacrificial arena. As far as Mahārāja Pṛthu was concerned, he was a great devotee of the Supreme Personality of Godhead; therefore it was not necessary for him to perform the prescribed Vedic ritualistic ceremonies. Such ceremonies are known as karma, and there is no need for a devotee in the transcendental position to execute them. As the ideal king, however, it was King Pṛthu's duty to perform sacrifices. A compromise was therefore to be worked out. By the blessings of Lord Brahmā, King Pṛthu would become more famous than King Indra. Thus Pṛthu's determination to perform one hundred sacrifices was indirectly fulfilled by the blessings of Lord Brahmā.
(Srimad Bhagavatam------4:19:32------translation and purport).

Lord Brahmā addresses King Pṛthu as prajāpate just to remind him of his great responsibility in maintaining the peace and prosperity of the citizens. Mahārāja Pṛthuwas empowered by the Supreme Personality of Godhead for this purpose only. It is the duty of the ideal king to see that people are properly executing religious principles. Lord Brahmā especially requested King Pṛthu to conquer the pseudoreligious principles produced by King Indra. In other words, it is the duty of the state or king to put a stop to pseudoreligious systems produced by unscrupulous persons. Originally a religious principle is one, given by the Supreme Personality of Godhead, and it comes through the channel of disciplic succession in two forms. Lord Brahmā requested Pṛthu Mahārāja to desist from his unnecessary competition with Indra, who was determined to stop Pṛthu Mahārāja from completing one hundred yajñas. Instead of creating adverse reactions, it was better for Mahārāja Pṛthu to stop the yajñas in the interest of his original purpose as an incarnation. This purpose was to establish good government and set things in the right order.
(Srimad Bhagavatam------4:19:38------ purport).

As King Indra was standing by, he became ashamed of his own activities and fell down before King Pṛthu to touch his lotus feet. But Pṛthu Mahārāja immediately embraced him in great ecstasy and gave up all envy against him for his having stolen the horse meant for the sacrifice.
There are many cases in which a person becomes an offender to the lotus feet of a Vaiṣṇava and later becomes repentant. Here also we find that although the King of heaven, Indra, was so powerful that he accompanied Lord Viṣṇu, he felt himself a great offender for stealing Pṛthu Mahārāja's horse that was meant for sacrifice. An offender at the lotus feet of a Vaiṣṇava is never excused by the Supreme Personality of Godhead. There are many instances illustrating this fact. Ambarīṣa Mahārāja was offended by Durvāsā Muni, a great sage and mystic yogī, and Durvāsā also had to fall down at the lotus feet of Ambarīṣa Mahārāja. Indra decided to fall down at the lotus feet of King Pṛthu, but the King was so magnanimous a Vaiṣṇava that he did not want Mahārāja Indra to fall down at his feet. Instead, King Pṛthu immediately picked him up and embraced him, and both of them forgot all the past incidents. Both King Indra and Mahārāja Pṛthu were envious and angry with each other, but since both of them were Vaiṣṇavas, or servants of Lord Viṣṇu, it was their duty to adjust the cause of their envy.
(Srimad Bhagavatam------4:20:18------translation and purport).

Pṛthu Mahārāja was so great in his activities and magnanimous in his method of ruling that all the kings and demigods on the various planets still follow in his footsteps. Who is there who will not try to hear about his glorious activities? I wish to hear more and more about Pṛthu Mahārāja because his activities are so pious and auspicious.
Saint Vidura's purpose in hearing about Pṛthu Mahārāja over and over again was to set an example for ordinary kings and executive heads, who should all be inclined to hear repeatedly about Pṛthu Mahārāja's activities in order to also be able to rule over their kingdoms or states very faithfully for the peace and prosperity of the people in general. Unfortunately, at the present moment no one cares to hear about Pṛthu Mahārāja or to follow in his footsteps; therefore no nation in the world is either happy or progressive in spiritual understanding, although that is the sole aim and objective of human life.
(Srimad Bhagavatam------4:21:10------translation and purport).

Pṛthu Mahārāja's sole aim in ruling his kingdom was to raise the citizens to the standard of God consciousness. Since there was a great assembly in the arena of sacrifice, there were different types of men present, but he was especially interested in speaking to those who were not atheists. It has already been explained in the previous verses thatPṛthu Mahārāja advised the citizens to become adhokṣaja-dhiyaḥ, which means God conscious, or Kṛṣṇa conscious, and in this verse he specifically presents the authority of śāstra, even though his father was a number one atheist who did not abide by the injunctions mentioned in the Vedic śāstras, who practically stopped all sacrificial performances and who so disgusted the brāhmaṇas that they not only dethroned him but cursed and killed him. Atheistic men do not believe in the existence of God, and thus they understand everything which is happening in our daily affairs to be due to physical arrangement and chance. Atheists believe in the atheistic Sāṅkhya philosophy of the combination of prakṛti and puruṣa. They believe only in matter and hold that matter under certain conditions of amalgamation gives rise to the living force, which then appears as puruṣa, the enjoyer; then, by a combination of matter and the living force, the many varieties of material manifestation come into existence. Nor do atheists believe in the injunctions of the Vedas. According to them, all the Vedic injunctions are simply theories that have no practical application in life. Taking all this into consideration, Pṛthu Mahārāja suggested that theistic men will solidly reject the views of the atheists on the grounds that there cannot be many varieties of existence without the plan of a superior intelligence. Atheists very vaguely explain that these varieties of existence occur simply by chance, but the theists who believe in the injunctions of the Vedas must reach all their conclusions under the direction of the Vedas.
(Srimad Bhagavatam------4:21:27------ purport).

Mahārāja Pṛthu's advice to his citizens to take to devotional service is now concluded in two ways. He has repeatedly advised persons who are neophytes to engage themselves in devotional service according to the capacities of the different orders of social and spiritual life, but here he specifically thanks those already engaged in such devotional service to the Supreme Personality of Godhead, who is actually the enjoyer of all sacrificial ceremonies and who is also the supreme teacher as antaryāmī, or Paramātmā. There is specific mention of the word gurum, which indicates the Supreme Personality as caitya-guru. The Supreme Godhead in His Paramātmā feature is present in everyone's heart, and He is always trying to induce the individual soul to surrender unto Him and to engage in devotional service; therefore He is the original spiritual master. He manifests Himself as spiritual master both internally and externally to help the conditioned soul both ways. Therefore He has been mentioned herein as gurum. It appears, however, that in the time of Mahārāja Pṛthu all the people on the surface of the globe were his subjects. Most of them—in fact, almost all of them—were engaged in devotional service. Therefore he thanked them in a humble way for engaging in devotional service and thus bestowing their mercy upon him. In other words, in a state where the citizens and the head of state are engaged in devotional service unto the Supreme Personality of Godhead, they help one another and are mutually benefited.
(Srimad Bhagavatam------4:21:36------ purport).

King Pṛthu spoke: My dear great sages, auspiciousness personified, it is very difficult for even the mystic yogīs to see you. Indeed, you are very rarely seen. I do not know what kind of pious activity I performed for you to grace me by appearing before me without difficulty.
When something uncommon happens in one's progressive spiritual life, it should be understood to be incurred by ajñāta-sukṛti, or pious activities beyond one's knowledge. To see personally the Supreme Personality of Godhead or His pure devotee is not an ordinary incident. When such things happen, they should be understood to be caused by previous pious activity, as confirmed in Bhagavad-gītā (7.28): yeṣāṁ tv anta-gataṁ pāpaṁ janānāṁ puṇya-karmaṇām. One who is completely freed from all the resultant actions of sinful activities and who is absorbed only in pious activities can engage in devotional service. Although Mahārāja Pṛthu's life was full of pious activities, he was wondering how his audience with the Kumāras happened. He could not imagine what kind of pious activities he had performed. This is a sign of humility on the part of King Pṛthu, whose life was so full of pious activities that even Lord Viṣṇu came to see him and predicted that the Kumāras would also come.
(Srimad Bhagavatam------4:22:7------translation and purport).

Mahārāja Pṛthu offered his welcome to the four Kumāras, addressing them as the best of the brāhmaṇas. He welcomed them, saying: From the beginning of your birth you strictly observed the vows of celibacy, and although you are experienced in the path of liberation, you are keeping yourselves just like small children.
The specific importance of the Kumāras is that they were brahmacārīs, living the life of celibacy from birth. They kept themselves as small children about four or five years old because by growing into youth one's senses sometimes become disturbed and celibacy becomes difficult. The Kumāras therefore purposefully remained children because in a child's life the senses are never disturbed by sex. This is the significance of the life of the Kumāras, and as such Mahārāja Pṛthu addressed them as the best of the brāhmaṇas. Not only were the Kumāras born of the best brāhmaṇa (Lord Brahmā), but they are addressed herein as dvija-śreṣṭhāḥ ("the best of the brāhmaṇas") on account of their being Vaiṣṇavas also. As we have already explained, they have their sampradāya (disciplic succession), and even to date the sampradāya is being maintained and is known as the Nimbārka-sampradāya. Out of the four sampradāyas of the Vaiṣṇava ācāryas, the Nimbārka-sampradāya is one. Mahārāja Pṛthu specifically appreciated the position of the Kumāras because they maintained the brahmacarya vow from the very beginning of their birth. Mahārāja Pṛthu, however, expressed his great appreciation of Vaiṣṇavism by addressing the Kumāras as vaiṣṇava-śreṣṭhāḥ. In other words, everyone should offer respect to a Vaiṣṇava without considering his source of birth. Vaiṣṇave jāti-buddhiḥ. No one should consider a Vaiṣṇava in terms of birth. The Vaiṣṇava is always the best of the brāhmaṇas, and as such one should offer all respects to a Vaiṣṇava, not only as a brāhmaṇa but as the best of the brāhmaṇas.
(Srimad Bhagavatam------4:22:12------translation and purport).

Mahārāja Pṛthu completely dedicated himself to be an eternal servant of the Supreme Personality of Godhead, transcendental to material nature. Consequently all the fruits of his activities were dedicated to the Lord, and he always thought of himself as the servant of the Supreme Personality of Godhead, who is the proprietor of everything.
The life and dedication of Mahārāja Pṛthu in the transcendental loving service of the Supreme Personality of Godhead serve as a good example of karma-yoga. The term karma-yoga is often used in Bhagavad-gīta—, and herein Mahārāja Pṛthu is giving a practical example of what karma-yoga actually is. The first requirement for the proper execution of karma-yoga is given herein. phalaṁ brahmaṇi sannyasya (or vinyasya): one must give the fruits of his activities to the Supreme Brahman, Parabrahman, Kṛṣṇa. By doing so, one actually situates himself in the renounced order of life, sannyāsa. As stated in Bhagavad-gītā (18.2), giving up the fruits of one's activities to the Supreme Personality of Godhead is called sannyāsa.
kāmyānāṁ karmaṇāṁ nyāsaṁ
sannyāsaṁ kavayo viduḥ
sarva-karma-phala-tyāgaṁ
prāhus tyāgaṁ vicakṣaṇāḥ
"To give up the results of all activities is called renunciation (tyāga) by the wise. And that state is called the renounced order of life (sannyāsa) by great learned men." Although he was living as a householder, Pṛthu Mahārāja was actually in the renounced order of life, sannyāsa. This will be clearer in the following verses.
The word nirviṣaṅgaḥ ("uncontaminated") is very significant because Mahārāja Pṛthu was not attached to the results of his activities.
(Srimad Bhagavatam------4:22:51------translation and purport).

Mahārāja Pṛthu was so strong and powerful that no one could disobey his orders any more than one could conquer fire itself. He was so strong that he was compared to Indra, the King of heaven, whose power is insuperable. On the other hand, Mahārāja Pṛthu was also as tolerant as the earth, and in fulfilling various desires of human society, he was like heaven itself.
It is the duty of a king to give protection to the citizens and to fulfill their desires. At the same time, the citizens must obey the laws of the state. Mahārāja Pṛthu maintained all the standards of good government, and he was so invincible that no one could disobey his orders any more than a person could stop heat and light emanating from a fire. He was so strong and powerful that he was compared to the King of heaven, Indra. In this age modern scientists have been experimenting with nuclear weapons, and in a former age they used to release brahmāstras, but all these brahmāstras and nuclear weapons are insignificant compared to the thunderbolt of the King of heaven. When Indra releases a thunderbolt, even the biggest hills and mountains crack. On the other hand, Mahārāja Pṛthu was as tolerant as the earth itself, and he fulfilled all the desires of his citizens just like torrents of rain from the sky. Without rainfall, it is not possible to fulfill one's various desires on this planet. As stated in Bhagavad-gītā (3.14), parjanyād anna-sambhavaḥ: food grains are produced only because rain falls from the sky, and without grains, no one on the earth can be satisfied. Consequently an unlimited distribution of mercy is compared to the water falling from the clouds. Mahārāja Pṛthudistributed his mercy incessantly, much like rainfall. In other words, Mahārāja Pṛthu was softer than a rose flower and harder than a thunderbolt. In this way he ruled over his kingdom.
(Srimad Bhagavatam------4:22:57------translation and purport).

The Supreme Personality of Godhead is the ideal self-controller or brahmacārī. When Kṛṣṇa was elected to be president of the Rājasūya yajña performed by Mahārāja Yudhiṣṭhira, Grandfather Bhīṣmadeva praised Lord Kṛṣṇa as the greatest brahmacārī. Because Grandfather Bhīṣmadeva was a brahmacārī, he was quite fit to distinguish a brahmacārī from a vyabhicārī. Although Pṛthu Mahārāja was a householder and father of five children, he was still considered to be most controlled. One who begets Kṛṣṇa conscious children for the benefit of humanity is actually a brahmacārī. One who simply begets children like cats and dogs is not a proper father. The word brahmacārī also refers to one who acts on the platform of Brahman, or devotional service. In the impersonal Brahman conception, there is no activity, yet when one performs activities in connection with the Supreme Personality of Godhead, he is to be known as brahmacārī. Thus Pṛthu Mahārāja was an ideal brahmacārī and gṛhastha simultaneously. Viṣvaksenānuvartiṣu refers to those devotees who are constantly engaged in the service of the Lord. Other devotees must follow in their footsteps. Śrīla Narottama dāsa Ṭhākura said, ei chaya gosāñi yāra, mui tāra dāsa. He is prepared to become the disciple of anyone who follows in the footsteps of the six Gosvāmīs.
Also, like all Vaiṣṇavas, Mahārāja Pṛthu was devoted to cow protection, spiritual masters and qualified brāhmaṇas. Pṛthu Mahārāja was also very humble, meek and gentle, and whenever he performed any philanthropic work or welfare activity for the general public, he would labor exactly as if he were tending to his own personal necessities. In other words, his philanthropic activities were not for the sake of show but were performed out of personal feeling and commitment. All philanthropic activities should be thus performed.
(Srimad Bhagavatam------4:22:62------ purport).

After retiring from family life, Mahārāja Pṛthu strictly followed the regulations of retired life and underwent severe austerities in the forest. He engaged in these activities as seriously as he had formerly engaged in leading the government and conquering everyone.
As it is necessary for one to become very active in family life, similarly, after retirement from family life, it is necessary to control the mind and senses. This is possible when one engages himself fully in the devotional service of the Lord. Actually the whole purpose of the Vedic system, the Vedic social order, is to enable one to ultimately return home, back to Godhead. The gṛhastha-āśrama is a sort of concession combining sense gratification with a regulative life. It is to enable one to easily retire in the middle of life and engage fully in austerities in order to transcend material sense gratification once and for all. Therefore in the vānaprastha stage of life, tapasya, or austerity, is strongly recommended. Mahārāja Pṛthu followed exactly all the rules of vānaprastha life, which is technically known as vaikhānasa-āśrama. The word vaikhānasa-susammate is significant because in vānaprastha life the regulative principles are also to be strictly followed. In other words, Mahārāja Pṛthu was an ideal character in every sphere of life. Mahājano yena gataḥ sa panthāḥ: (CC.2:17:186) one should follow in the footsteps of great personalities. Thus by following the exemplary character of Mahārāja Pṛthu, one can become perfect in all respects while living this life or while retiring from active life. Thus after giving up this body, one can become liberated and go back to Godhead.
(Srimad Bhagavatam------4:23:4------ purport).

In the tapo-vana, Mahārāja Pṛthu sometimes ate the trunks and roots of trees, and sometimes he ate fruit and dried leaves, and for some weeks he drank only water. Finally he lived simply by breathing air.
In Bhagavad-gītā, yogīs are advised to go to a secluded place in the forest and live alone in a sanctified spot there. By Pṛthu Mahārāja's behavior we can understand that when he went to the forest he did not eat any cooked food sent from the city by some devotees or disciples. As soon as one takes a vow to live in the forest, he must simply eat roots, tree trunks, fruits, dried leaves or whatever nature provides in that way. Pṛthu Mahārāja strictly adopted these principles for living in the forest, and sometimes he ate nothing but dried leaves and drank nothing but a little water. Sometimes he lived on nothing but air, and sometimes he ate some fruit from the trees. In this way he lived in the forest and underwent severe austerity, especially in regards to eating. In other words, overeating is not at all recommended for one who wants to progress in spiritual life. Śrī Rūpa Gosvāmī also warns that too much eating and too much endeavor (atyāhāraḥ prayāsaś ca ) are against the principles by which one can advance in spiritual life.
(Srimad Bhagavatam------4:23:5------translation and purport).

It is also notable that according to Vedic injunction, to live in the forest is to live in the mode of complete goodness, whereas to live in the city is to live in the mode of passion, and to live in a brothel or drinking house is to live in the mode of ignorance. However, to live in a temple is to live in Vaikuṇṭha, which is transcendental to all the modes of material nature. This Kṛṣṇa consciousness movement affords one the opportunity to live in the temple of the Lord, which is as good as Vaikuṇṭha. Consequently a Kṛṣṇa conscious person does not need to go to the forest and artificially try to imitate Mahārāja Pṛthu or the great sages and munis who used to live in the forest.
Śrīla Rūpa Gosvāmī, after retiring from his minister's seat in the government, went to Vṛndāvana and lived beneath a tree, like Mahārāja Pṛthu. Since then, many people have gone to Vṛndāvana to imitate Rūpa Gosvāmī's behavior. Instead of advancing in spiritual life, many have fallen into material habits and even in Vṛndāvana have become victims of illicit sex, gambling and intoxication. The Kṛṣṇa consciousness movement has been introduced in the Western countries, but it is not possible for Westerners to go to the forest and practice the severe austerities which were ideally practiced by Pṛthu Mahārāja or Rūpa Gosvāmī. However, Westerners or anyone else can follow in the footsteps of Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura by living in a temple, which is transcendental to residence in a forest, and to vow to accept kṛṣṇa-prasāda and nothing else, follow the regulative principles and chant sixteen rounds daily of the Hare Kṛṣṇa mantra. In this way, one's spiritual life will never be disturbed.
(Srimad Bhagavatam------4:23:5------ purport).

King Pṛthu's activities took place in Satya-yuga, and in this age this practice of yoga is misunderstood by fallen souls who are not capable of practicing anything. Consequently the śāstras enjoin: kalau nāsty eva nāsty eva nāsty eva gatir anyathā. The conclusion is that unless the karmīs, jñānīs and yogīs come to the point of devotional service to Lord Kṛṣṇa, their so-called austerities and yoga have no value. Nārādhitaḥ: if Hari, the Supreme Personality of Godhead, is not worshiped, there is no point in practicing meditational yoga, performing karma-yoga or culturing empiric knowledge. As far as prāṇāyāma is concerned, chanting of the holy name of the Lord and dancing in ecstasy are also considered prāṇāyāma. In a previous verse, Sanat-kumāra instructed Mahārāja Pṛthu to engage constantly in the service of the Supreme Lord, Vāsudeva:
yat pāda-paṅkaja-palāśa-vilāsa-bhaktyā
karmāśayaṁ grathitam udgrathayanti santaḥ
Only by worshiping Vāsudeva can one become free from the desires of fruitive activities. Outside of worshiping Vāsudeva, the yogīs and jñānīs cannot attain freedom from such desires.
(Srimad Bhagavatam------4:23:8------ purport).

The Queen, the wife of Pṛthu Mahārāja, whose name was Arci, followed her husband into the forest. Since she was a queen, her body was very delicate. Although she did not deserve to live in the forest, she voluntarily touched her lotus feet to the ground.
Because Pṛthu Mahārāja's wife was the Queen and also a daughter of a king, she never experienced walking on the ground, for queens used to never come out of the palace. They certainly never went to the forests and tolerated all the difficulties of living in the wilderness. In Vedic civilization there are hundreds of similar examples of such renunciation on the part of queens and dedication to the husband. The goddess of fortune mother Sītā followed her husband, Rāmacandra, when He went to the forest. Lord Rāmacandra went to the forest in compliance with the order of His father, Mahārāja Daśaratha, but mother Sītā was not so ordered. Nonetheless, she voluntarily accepted the path of her husband. Similarly, Gāndhārī, the wife of King Dhṛtarāṣṭra, also followed her husband into the forest. Being the wives of great personalities like Pṛthu, Lord Rāmacandra and Dhṛtarāṣṭra, these were ideal chaste women. Such queens also instructed the general people by showing them how to become a chaste wife and follow the husband in every stage of life. When the husband is king, she sits beside him as the queen, and when he goes to the forest, she also follows, despite having to tolerate all kinds of difficulties in living in the forest. Therefore it is said here (atad-arhā) that although she did not want to touch her feet to the ground, she nonetheless accepted all difficulties when she went to the forest with her husband.
(Srimad Bhagavatam------4:23:19------ purport).

Both Pṛthu Mahārāja's airplane and the airplane carrying Queen Arci were passing out of the vision of the ladies of the higher planetary systems. These ladies were simply astonished to see how Pṛthu Mahārāja and his wife achieved such an exalted position. Although they were the wives of the denizens of the higher planetary system and PṛthuMahārāja was an inhabitant of an inferior planetary system (the earth), the King, along with his wife, passed beyond the realms of the demigods and went upward to Vaikuṇṭhaloka. The word ūrdhvam ("upward") is significant here, for the ladies speaking were from the higher planetary systems, which include the moon, sun and Venus, up to Brahmaloka, or the highest planet. Beyond Brahmaloka is the spiritual sky, and in that spiritual sky there are innumerable Vaikuṇṭhalokas. Thus the word ūrdhvam indicates that the Vaikuṇṭha planets are beyond or above these material planets, and it was to these Vaikuṇṭha planets that Pṛthu Mahārāja and his wife were going. This also indicates that when Pṛthu Mahārāja and his wife, Arci, abandoned their material bodies in the material fire, they immediately developed their spiritual bodies and entered into spiritual airplanes, which could penetrate the material elements and reach the spiritual sky. Since they were carried by two separate airplanes, it may be concluded that even after being burned in the funeral pyre they remained separate, individual persons. In other words, they never lost their identity or became void, as imagined by the impersonalists.
The ladies in the higher planetary systems were capable of seeing both downward and upward. When they looked down they could see that the body of Pṛthu Mahārāja was being burned and that his wife, Arci, was entering into the fire, and when they looked upward they could see how they were being carried in two airplanes to the Vaikuṇṭhalokas. All of this is possible simply by durvibhāvyena karmaṇā, inconceivable activity. Pṛthu Mahārāja was a pure devotee, and his wife, Queen Arci, simply followed her husband. Thus they can both be considered pure devotees, and thus they are capable of performing inconceivable activities. Such activities are not possible for ordinary men. Indeed, ordinary men cannot even take to the devotional service of the Lord, nor can ordinary women maintain such vows of chastity and follow their husbands in all respects. A woman does not need to attain high qualifications, but if she simply follows in the footsteps of her husband, who must be a devotee, then both husband and wife attain liberation and are promoted to the Vaikuṇṭhalokas. This is evinced by the inconceivable activities of Mahārāja Pṛthu and his wife.
(Srimad Bhagavatam------4:23:26------ purport).