One should be very careful not to commit offenses at the lotus feet of Vaiṣṇavas, of whom Lord Śiva is the best. While instructing Śrīla Rūpa Gosvāmī, Śrī Caitanya Mahāprabhu described an offense at the lotus feet of a Vaiṣṇava as hātī mātā, a mad elephant. When a mad elephant enters a nice garden, it spoils the entire garden. Similarly, if one becomes like a mad elephant and commits offenses at the lotus feet of a Vaiṣṇava, his entire spiritual career is halted. One should therefore be very careful not to commit offenses at the lotus feet of a Vaiṣṇava.
Mother Pārvatī was justified in punishing Citraketu, for Citraketu impudently criticized the supreme father, Mahādeva, who is the father of the living entities conditioned within this material world. The goddess Durgā is called mother, and Lord Śiva is called father. A pure Vaiṣṇava should be very careful to engage in his specific duty without criticizing others. This is the safest position. Otherwise, if one tends to criticize others, he may commit the great offense of criticizing a Vaiṣṇava.
(Srimad Bhagavatam----6:17:15----purport).

Since Citraketu was a devotee of the Lord, he was not at all disturbed by the curse of mother Pārvatī. He knew very well that one suffers or enjoys the results of one's past deeds as ordained by daiva-netra-superior authority, or the agents of the Supreme Personality of Godhead. He knew that he had not committed any offense at the lotus feet ofLord Śiva or the goddess Pārvatī, yet he had been punished, and this means that the punishment had been ordained. Thus the King did not mind it. A devotee is naturally so humble and meek that he accepts any condition of life as a blessing from the Lord.
(Srimad Bhagavatam----6:17:17----purport).

Lord Śiva, the husband of Pārvatī, told his wife, "My dear Pārvatī, you are very beautiful in your bodily features. Certainly you are glorious. But I do not think that you can compete with the beauty and glory of devotees who have become servants of the servants of the Supreme Personality of Godhead." Of course, Lord Śiva smiled when he joked with his wife in that way, for others cannot speak like that. "The Supreme Lord," Śiva continued, "is always exalted in His activities, and here is another example of His wonderful influence upon King Citraketu, His devotee. Just see, although you cursed the King, he was not at all afraid or sorry. Rather, he offered respect to you, called you mother and accepted your curse, thinking himself faulty. He did not say anything in retaliation. This is the excellence of a devotee. By mildly tolerating your curse, he has certainly excelled the glory of your beauty and your power to curse him. I can impartially judge that this devotee, Citraketu, has defeated you and your excellence simply by becoming a pure devotee of the Lord." As stated by Śrī Caitanya Mahāprabhu, taror api sahiṣṇunā. Just like a tree, a devotee can tolerate all kinds of curses and reversals in life. This is the excellence of a devotee. Indirectly, Lord Śiva forbade Pārvatī to commit the mistake of cursing a devotee like Citraketu. He indicated that although she was powerful, the King, without showing any power, had excelled her power by his tolerance.
(Srimad Bhagavatam----6:17:27----purport).

Blaspheming the Supreme Lord or His devotee is not at all good for the conditioned soul, but Kṛṣṇa, being very kind, punishes the conditioned soul in one life for such sinful activities and then takes him back home, back to Godhead. The vivid example for this is Vṛtrāsura, who was formerly Citraketu Mahārāja, a great devotee. Because he derided Lord Śiva, the foremost of all devotees, he had to accept the body of a demon called Vṛtra, but then he was taken back to Godhead. Thus when Kṛṣṇa punishes a demon or conditioned soul, He stops that soul's habit of blaspheming Him, and when the soul becomes completely pure, the Lord takes him back to Godhead.
(Srimad Bhagavatam----7:1:25----purport).

In the book Nāma-kaumudī it is recommended that if one is an offender at the lotus feet of a Vaiṣṇava, he should submit to that Vaiṣṇava and be excused; similarly, if one is an offender in chanting the holy name, he should submit to the holy name and thus be freed from his offenses. In this connection there is the following statement, spoken by Dakṣa to Lord Śiva: "I did not know the glories of your personality, and therefore I committed an offense at your lotus feet in the open assembly. You are so kind, however, that you did not accept my offense. Instead, when I was falling down because of accusing you, you saved me by your merciful glance. You are most great. Kindly excuse me and be satisfied with your own exalted qualities."
(Srimad Bhagavatam----7:5:23-24----purport).

During the period of annihilation, at the end of each millennium, the Lord becomes angry, and the part of anger is played by Lord Śiva, who is therefore called Rudra. When the Lord appeared in great anger to kill Hiraṇyakaśipu, everyone was extremely afraid of the Lord's attitude, but Lord Śiva, knowing very well that the Lord's anger is also His līlā, was not afraid. Lord Śiva knew that he would have to play the part of anger for the Lord. Kāla means Lord Śiva (Bhairava), and kopa refers to the Lord's anger. These words, combined together as kopa-kāla, refer to the end of each millennium. Actually the Lord is always affectionate toward His devotees, even though He may appear very angry. Because He is avyayātmā-because He never falls down—even when angry the Lord is affectionate toward His devotees. Therefore Lord Śiva reminded the Lord to act like an affectionate father toward Prahlāda Mahārāja, who was standing by the Lord's side as an exalted, fully surrendered devotee.
(Srimad Bhagavatam----7:8:41----purport).

As a result of the churning, a huge amount of poison was produced. The prajāpatis, seeing no one else to save them, approached Lord Śiva and offered him prayers full of truth. Lord Śiva is called Āśutoṣa because he is very pleased if one is a devotee. Therefore he easily agreed to drink all the poison generated by the churning. The goddess Durgā, Bhavānī, the wife of Lord Śiva, was not at all disturbed when Lord Śiva agreed to drink the poison, for she knew Lord Śiva's prowess. Indeed, she expressed her pleasure at this agreement. Then Lord Śiva gathered the devastating poison, which was everywhere. He took it in his hand and drank it. After he drank the poison, his neck became bluish. A small quantity of the poison dropped from his hands to the ground, and it is because of this poison that there are poisonous snakes, scorpions, toxic plants and other poisonous things in this world.
(Srimad Bhagavatam----8:7--summary).

Since Lord Śiva is in charge of annihilation, why should he be approached for protection, which is given by Lord Viṣṇu? Lord Brahmā creates, and Lord Śivaannihilates, but both Lord Brahmā and Lord Śiva are incarnations of Lord Viṣṇu and are known as śaktyāveśa-avatāras. They are endowed with a special power like that of Lord Viṣṇu, who is actually all-pervading in their activities. Therefore whenever prayers for protection are offered to Lord Śiva, actually Lord Viṣṇu is indicated, for otherwise Lord Śiva is meant for destruction. Lord Śiva is one of the īśvaras, or the controllers known as śaktyāveśa-avatāras. Therefore he can be addressed as having the qualities of Lord Viṣṇu.
(Srimad Bhagavatam----8:7:21-----purport).

Actually Lord Viṣṇu maintains and accomplishes all good fortune. If one has to take shelter of Lord Viṣṇu, why should the demigods take shelter of Lord Śiva? They did so because Lord Viṣṇu acts through Lord Śiva in the creation of the material world. Lord Śiva acts on behalf of Lord Viṣṇu. When the Lord says in Bhagavad-gītā (14.4) that He is the father of all living entities (ahaṁ bīja-pradaḥ pitā), this refers to actions performed by Lord Viṣṇu through Lord Śiva. Lord Viṣṇu is always unattached to material activities, and when material activities are to be performed, Lord Viṣṇu performs them through Lord Śiva. Lord Śiva is therefore worshiped on the level of Lord Viṣṇu. When Lord Viṣṇu is untouched by the external energy He is Lord Viṣṇu, but when He is in touch with the external energy, He appears in His feature as Lord Śiva.
(Srimad Bhagavatam----8:7:22-----purport).

Lord Śiva is the topmost Vaiṣṇava (vaiṣṇavānāṁ yathā śambhuḥ). It is therefore said, vaiṣṇavera kriyā-mudrā vijñe nā bujhaya. Even the most intelligent person cannot understand what a Vaiṣṇava like Lord Śiva is doing or how he is acting. Those who are conquered by lusty desires and anger cannot estimate the glories of Lord Śiva, whose position is always transcendental. In all the activities associated with lusty desires, Lord Śiva is an implement of ātma-rāma. Ordinary persons, therefore, should not try to understand LordŚiva and his activities. One who tries to criticize the activities of Lord Śiva is shameless.
(Srimad Bhagavatam----8:7:23-----purport).

In materialistic life, people must certainly engage in activities of animosity. Materialistic life is therefore compared to saṁsāra-dāvānala, a blazing forest fire that automatically takes place. Lord Śiva and his followers in the paramparā system try to save people from this dangerous condition of materialistic life. This is the duty of devotees following the principles of Lord Śiva and belonging to the Rudra-sampradāya. There are four Vaiṣṇava sampradāyas, and the Rudra-sampradāya is one of them because Lord Śiva (Rudra) is the best of the Vaiṣṇavas (vaiṣṇavānāṁ yathā śambhuḥ). Indeed, as we shall see, Lord Śiva drank all the poison for the benefit of humanity.
(Srimad Bhagavatam----8:7:39-----purport).

This chapter describes how Lord Śiva was bewildered upon seeing the beautiful Mohinī-mūrti incarnation of the Supreme Personality of Godhead and how he later came to his senses. When Lord Śiva heard about the pastimes performed by the Supreme Personality of Godhead, Hari, in the form of an attractive woman, he mounted his bull and went to see the Lord. Accompanied by his wife, Umā, and his servants, the bhūta-gaṇa, or ghosts, he approached the lotus feet of the Lord. Lord Śiva offered obeisances to the Supreme Lord as the all-pervading Lord, the universal form, the supreme controller of creation, the Supersoul, the resting place for everyone, and the completely independent cause of all causes. Thus he offered prayers giving truthful descriptions of the Lord. Then he expressed his desire. The Supreme Personality of Godhead is very kind to His devotees. Therefore, to fulfill the desire of His devotee Lord Śiva, He expanded His energy and manifested Himself in the form of a very beautiful and attractive woman. Upon seeing this form, even Lord Śiva was captivated. Later, by the grace of the Lord, he controlled himself. This demonstrates that by the power of the Lord's external energy, everyone is captivated by the form of woman in this material world. Again, however, by the grace of the Supreme Personality of Godhead, one can overcome the influence of māyā. This was evinced by Lord Śiva, the topmost devotee of the Lord.
(Srimad Bhagavatam----8:12--summary).

The Supreme Personality of Godhead, Viṣṇu, resides within the material world as the sattva-guṇa-avatāra. Lord Śiva is the tamo-guṇa-avatāra, and Lord Brahmā is the rajo-guṇa-avatāra, but although Lord Viṣṇu is among them, He is not in the same category. Lord Viṣṇu is deva-deva, the chief of all the demigods. Since Lord Śiva is in this material world, the energy of the Supreme Lord, Viṣṇu, includes Lord Śiva. Lord Viṣṇu is therefore called jagad-vyāpī, "the all-pervading Lord." Lord Śiva is sometimes called Maheśvara, and so people think that Lord Śiva is everything. But here Lord Śiva addresses Lord Viṣṇu as Jagad-īśa, "the master of the universe." Lord Śiva is sometimes called Viśveśvara, but here he addresses Lord Viṣṇu as Jagan-maya, indicating that even Viśveśvara is under Lord Viṣṇu's control.
(Srimad Bhagavatam----8:12:4-----purport).

Of the three chief demigods—Brahmā, Viṣṇu and Maheśvara—all but Viṣṇu are under the influence of māyā. In Caitanya-caritāmṛta, they are described as māyī, which means "under māyā's influence." But even though Lord Śiva associates with māyā, he is not influenced. The living entities are affected by māyā, but although Lord Śiva apparently associates with māyā, he is not affected. In other words, all living entities within this material world except for Lord Śiva are swayed by māyā. Lord Śiva is therefore neither viṣṇu-tattva nor jīva-tattva. He is between the two.
(Srimad Bhagavatam----8:12:39-----purport).

Lord Śiva is known as Gaṅgā-dhara, or one who carries the water of the Ganges on his head. On Lord Śiva's forehead is the emblem of the half-moon, yet to give supreme respect to the Supreme Personality of Godhead, Lord Śiva placed the water of the Ganges above this emblem. This example should be followed by everyone, or at least by every devotee, because Lord Śiva is one of the mahājanas.
(Srimad Bhagavatam----8:18:28-----purport).

After Lord Brahmā understood the precarious condition of the earth, he first visited the demigods headed by Lord Indra, who are in charge of the various affairs of this universe, and Lord Śiva, who is responsible for annihilation. Both maintenance and annihilation go on perpetually, under the order of the Supreme Personality of Godhead. As stated in Bhagavad-gītā (4.8), paritrāṇāya sādhūnāṁ vināśāya ca duṣkṛtām. Those who are obedient to the laws of God are protected by different servants and demigods, whereas those who are undesirable are vanquished by Lord Śiva. Lord Brahmā first met all the demigods, including Lord Śiva. Then, along with mother earth, they went to the shore of the ocean of milk, where Lord Viṣṇu lies on a white island, Śvetadvīpa.
(Srimad Bhagavatam----10:1:9-----purport).

As for Keśava, ka means Brahmā, and īśa means Lord Śiva. The Personality of Godhead captivates both Lord Brahmā and Lord Mahādeva, or Śiva, by His transcendental qualities. Therefore He is called Keśava. This opinion is given by Sanātana Gosvāmī in his Vaiṣṇava-toṣaṇī commentary.
It is said that all the demigods, accompanied by Tri-nayana, Lord Śiva, went to the shore of the ocean of milk and offered their prayers through the mantra known as puruṣa-sūkta. From this statement it is understood that the demigods cannot directly approach Lord Viṣṇu, who lies on the ocean of milk, or enter His abode.
(Srimad Bhagavatam----10:1:69-----purport).

The Laghu-bhāgavatāmṛta (Pūrva 2.36–42) gives the following description of the Viṣṇuloka within this universe, quoted from the Viṣṇu-dharmottara: "Above Rudraloka, the planet of Lord Śiva, is the planet called Viṣṇuloka, 400,000 miles in circumference, which is inaccessible to any mortal living being. Above that Viṣṇuloka and east of the Sumeru Hill is a golden island called Mahā-Viṣṇuloka, in the ocean of salt water. Lord Brahmā and other demigods sometimes go there to meet Lord Viṣṇu. Lord Viṣṇu lies there with the goddess of fortune, and it is said that during the four months of the rainy season He enjoys sleeping on that Śeṣa Nāga bed. East of Sumeru is the ocean of milk, in which there is a white city on a white island where the Lord can be seen sitting with His consort, Lakṣmījī, on a throne of Śeṣa. That feature of Viṣṇu also enjoys sleeping during the four months of the rainy season. The Śvetadvīpa in the milk ocean is situated just south of the ocean of salt water. It is calculated that the area of Śvetadvīpa is 200,000 square miles. This transcendentally beautiful island is decorated with desire trees to please Lord Viṣṇu and His consort."
(Sri Caitanya Caritamrta----1:5:112----purport).

There are eleven expansions of Rudra, or Lord Śiva. They are as follows: Ajaikapāt, Ahibradhna, Virūpākṣa, Raivata, Hara, Bahurūpa, Devaśreṣṭha Tryambaka, Sāvitra, Jayanta, Pināki and Aparājita. Besides these expansions there are eight forms of Rudra called earth, water, fire, air, sky, the sun, the moon and soma-yājī. Generally all theseRudras have five faces, three eyes and ten arms. Sometimes it is found that Rudra is compared to Brahmā and considered a living entity. But when Rudra is explained to be a partial expansion of the Supreme Personality of Godhead, he is compared to Śeṣa. Lord Śiva is therefore simultaneously an expansion of Lord Viṣṇu and, in his capacity for annihilating the creation, one of the living entities. As an expansion of Lord Viṣṇu he is called Hara, and he is transcendental to the material qualities, but when he is in touch with tamo-guṇa he appears contaminated by the material modes of nature.
(Sri Caitanya Caritamrta----1:6:79----purport).

One may argue that since Śaṅkarācārya is an incarnation of Lord Śiva, how is it that he cheated people in this way? The answer is that he did so on the order of his master, the Supreme Personality of Godhead. This is confirmed in the Padma Purāṇa, in the words of Lord Śiva himself:
māyāvādam asac chāstraṁ pracchannaṁ bauddham ucyate
mayaiva kalpitaṁ devi kalau brāhmaṇa-rūpiṇā
brahmaṇaś cāparaṁ rūpaṁ nirguṇaṁ vakṣyate mayā
sarva-svaṁ jagato ’py asya mohanārthaṁ kalau yuge
vedānte tu mahā-śāstre māyāvādam avaidikam
mayaiva vakṣyate devi jagatāṁ nāśa-kāraṇāt
"The Māyāvāda philosophy," Lord Śiva informed his wife Pārvatī, "is impious (asac chāstra). It is covered Buddhism. My dear Pārvatī, in Kali-yuga I assume the form of a brāhmaṇa and teach this imagined Māyāvāda philosophy. In order to cheat the atheists, I describe the Supreme Personality of Godhead to be without form and without qualities. Similarly, in explaining Vedānta I describe the same Māyāvāda philosophy in order to mislead the entire population toward atheism by denying the personal form of the Lord."
(Sri Caitanya Caritamrta----1:7:110----purport).

Lord Caitanya Mahāprabhu adopted the mood of Lord Śiva, for He is Śiva also. According to the philosophy of acintya-bhedābheda-tattva, Lord Śiva is not different from Lord Viṣṇu, but still Lord Śiva is not Lord Viṣṇu, just as yogurt is nothing but milk and yet is not milk nevertheless. One cannot get the benefit of milk by drinking yogurt. Similarly, one cannot get salvation by worshiping Lord Śiva. If one wants salvation, one must worship Lord Viṣṇu. This is confirmed in the Bhagavad-gītā (9.4): mat-sthāni sarva-bhūtāni na cāhaṁ teṣv avasthitaḥ. Everything is resting on the Lord, for everything is His energy, yet He is not everywhere. Lord Caitanya's adopting the mood of Lord Śiva is not extraordinary, but one should not therefore think that by worshiping Lord Śiva one is worshiping Lord Caitanya. That would be a mistake.
(Sri Caitanya Caritamrta----1:17:100----purport).

In his book Caitanya-bhāgavata, Antya-khaṇḍa, Śrīla Vṛndāvana dāsa Ṭhākura has very nicely described the Lord's journey en route to Kaṭaka (Cuttak). On that journey, the Lord visited a place known as Bālihastā, or Bālakāṭīcaṭi. He then visited the city of Bhuvaneśvara, where Lord Śiva's temple is located. The temple of Bhuvaneśvara is situated about five to six miles from Bālakāṭīcaṭi. The temple of Lord Śiva is mentioned in the Skanda Purāṇa, in the narration about the Lord's garden and the one mango tree. A king named Kāśirāja wanted to fight with Lord Kṛṣṇa, and consequently he took shelter of Lord Śiva to acquire the power to fight the Lord. Being pleased with his worship, Lord Śiva helped him fight Kṛṣṇa. Lord Śiva's name is Āśutoṣa, which indicates that he is very easily satisfied when one worships him, regardless of the purpose, and he gives his devotee whatever benediction the devotee wants. Therefore, people are generally very fond of worshiping Lord Śiva. Thus Kāśirāja was helped by Lord Śiva, but in the fight with Lord Kṛṣṇa he was not only defeated but killed. In this way the weapon known as Pāśupata-astra was baffled, and Kṛṣṇa set fire to the city of Kāśī. Later Lord Śiva became conscious of his mistake in helping Kāśirāja, and he begged Lord Kṛṣṇa's forgiveness. As a benediction from Lord Kṛṣṇa, he received a place known as Ekāmra-kānana.
(Sri Caitanya Caritamrta----2:5:140----purport).

The word svāṅga-viśeṣābhāsa-rūpe, indicating the form by which the Lord begets living entities in the material world, is explained herein. He is Lord Śiva. In the Brahma-saṁhitā it is stated that Lord Śiva, who is another form of Mahā-Viṣṇu, is like yogurt. Yogurt is nothing but milk, yet it is not milk. Similarly, Lord Śiva is considered the father of this universe, and material nature is considered the mother. The father and mother are known as Lord Śiva and goddess Durgā. Together, Lord Śiva's genitals and the vagina of goddess Durgā are worshiped as the śiva-liṅga. This is the origin of the material creation. Thus Lord Śiva's position is between that of the living entity and that of the Supreme Lord. In other words,Lord Śiva is neither the Supreme Personality of Godhead nor a living entity. He is the form through which the Supreme Lord works to beget living entities within this material world. As yogurt is prepared when milk is mixed with a culture, the form of Lord Śiva expands when the Supreme Personality of Godhead is in touch with material nature. The impregnation of material nature by the father, Lord Śiva, is wonderful because at one time innumerable living entities are conceived.
(Sri Caitanya Caritamrta----2:20:273----purport).