The word amba is significant. A father sometimes addresses his daughter in affection as "mother" and sometimes as "my darling." The feeling of separation occurs because until the daughter is married she remains the daughter of the father, but after her marriage she is no longer claimed as a daughter in the family; she must go to the husband's house, for after marriage she becomes the property of the husband. According to Manu-saṁhitā, a woman is never independent. She must remain the property of the father while she is not married, and she must remain the property of the husband until she is elderly and has grown-up children of her own. In old age, when the husband has taken sannyāsa and left home, she remains the property of the sons. A woman is always dependent, either upon the father, husband or elderly sons. That will be exhibited in the life of Devahūti. Devahūti's father handed over responsibility for her to the husband, Kardama Muni, and in the same way, Kardama Muni also left home, giving the responsibility to his son, Kapiladeva. This narration will describe these events one after another.
(Srimad Bhagavatam-----3:22:25-----purport).

From Mahābhārata we learn that when Gāndhārī understood that her would-be husband, Dhṛtarāṣṭra, was blind, she immediately began to practice blindness herself. Thus she covered her eyes and played the part of a blind woman. She decided that since her husband was blind, she must also act like a blind woman, otherwise she would be proud of her eyes, and her husband would be seen as inferior. The word samanuvrata indicates that it is the duty of a wife to adopt the special circumstances in which the husband is situated. Of course, if the husband is as great as Kardama Muni, then a very good result accrues from following him. But even if the husband is not a great devotee like Kardama Muni, it is the wife's duty to adapt herself according to his mentality. That makes married life very happy. It is also mentioned herein that by following the strict vows of a chaste woman, Princess Devahūti became very skinny, and therefore her husband became compassionate. He knew that she was the daughter of a great king and yet was serving him just like an ordinary woman. She was reduced in health by such activities, and he became compassionate and addressed her as follows.
(Srimad Bhagavatam-----3:23:4-5-----purport).

Before her marriage, when Devahūti was brought by her parents before the sage Kardama, she was the perfectly beautiful princess, and Kardama Muni remembered her former beauty. But after her marriage, when she was engaged in the service of Kardama Muni, she neglected to care for her body like a princess, since there was no means for such care; her husband was living in a cottage, and since she was always engaged in serving him, her royal beauty disappeared, and she became just like an ordinary maidservant. Now, after being bathed by the Gandharva girls by the order of Kardama Muni's yogic power, she regained her beauty, and Kardama Muni felt attracted to the beauty she had shown before the marriage. The real beauty of a young woman is her breasts. When Kardama Muni saw the breasts of his wife so nicely decorated, increasing her beauty many times, he was attracted, even though he was a great sage. Śrīpāda Śaṅkarācārya has therefore warned the transcendentalists that one who is after transcendental realization should not be attracted by the raised breasts of a woman because they are nothing but an interaction of fat and blood within the body.
(Srimad Bhagavatam-----3:23:36-37-----purport).

It is said that the father himself becomes the son in another form. The father and son are therefore considered to be nondifferent. A widow who has her son is actually not a widow, because she has the representative of her husband. Similarly, Devahūti is indirectly asking Kardama Muni to leave a representative so that in his absence she might be relieved of her anxieties by a suitable son. A householder is not expected to remain at home for all his days. After getting his sons and daughters married, a householder can retire from household life, leaving his wife in the charge of the grown-up sons. That is the social convention of the Vedic system. Devahūti is indirectly asking that in his absence from home there be at least one male child to give her relief from her anxieties.
(Srimad Bhagavatam-----3:23:52-----purport).

There are many other considerations, especially character and taste. If the taste and character differ between the man and woman, their combination will be unhappy. Even about forty years ago, in Indian marriages, the taste and character of the boy and girl were first of all matched, and then they were allowed to marry. This was done under the direction of the respective parents. The parents used to astrologically determine the character and tastes of the boy and girl, and when they corresponded, the match was selected: "This girl and this boy are just suitable, and they should be married." Other considerations were less important. The same system was also advised in the beginning of the creation by Brahmā: "Your daughters should be handed over to the ṛṣis according to taste and character."
According to astrological calculation, a person is classified according to whether he belongs to the godly or demoniac quality. In that way the spouse was selected. A girl of godly quality should be handed over to a boy of godly quality. A girl of demoniac quality should be handed over to a boy of demoniac quality. Then they will be happy. But if the girl is demoniac and the boy is godly, then the combination is incompatible; they cannot be happy in such a marriage. At the present moment, because boys and girls are not married according to quality and character, most marriages are unhappy, and there is divorce.
It is foretold in the Twelfth Canto of the Bhāgavatam that in this age of Kali married life will be accepted on the consideration of sex only; when the boy and girl are pleased in sex, they getmarried, and when there is deficiency in sex, they separate. That is not actual marriage, but a combination of men and women like cats and dogs. Therefore, the children produced in the modern age are not exactly human beings. Human beings must be twice-born. A child is first born of a good father and mother, and then he is born again of the spiritual master and the Vedas. The first mother and father bring about his birth into the world; then the spiritual master and the Vedas become his second father and mother. According to the Vedic system ofmarriage for producing children, every man and woman was enlightened in spiritual knowledge, and at the time of their combination to produce a child, everything was scrutinizingly and scientifically done.
(Srimad Bhagavatam-----3:24:15-----purport).

The words haṁsena yānena are very significant here. Haṁsa-yāna, the airplane by which Brahmā travels all over outer space, resembles a swan. Brahmā is also known as Haṁsa because he can grasp the essence of everything. His abode is called tri-dhāma-paramam. There are three divisions of the universe—the upper planetary system, the middle planetary system and the lower planetary system—but his abode is above even Siddhaloka, the upper planetary system. He returned to his own planet with the four Kumāras and Nārada because they were not going to be married. The other ṛṣis who came with him, such as Marīci and Atri, remained there because they were to be married to the daughters of Kardama, but his other sons—Sanat, Sanaka, Sanandana, Sanātana and Nārada—went back with him in his swan-shaped airplane. The four Kumāras and Nārada are naiṣṭhika-brahmacārīs. Naiṣṭhika-brahmacārī refers to one who never wastes his semen at any time. They were not to attend the marriage ceremony of their other brothers, Marīci and the other sages, and therefore they went back with their father, Haṁsa.
(Srimad Bhagavatam-----3:24:20-----purport).

Kardama Muni practiced yoga very rigidly as a brahmacārī before his marriage, and he became so powerful and attained so much mystic power that his father, Brahmā, ordered him to marry and beget children as a householder. Kardama did that also; he begot nine good daughters and one son, Kapila Muni, and thus his householder duty was also performed nicely, and now his duty was to leave. Even though he had the Supreme Personality of Godhead as his son, he had to respect the authority of the Vedas. This is a very important lesson. Even if one has God in his home as his son, one should still follow the Vedic injunctions. It is stated, mahājano yena gataḥ sa panthāḥ: (CC.2:17:186) one should traverse the path which is followed by great personalities.
(Srimad Bhagavatam-----3:24:35-----purport).

A devotee should observe the vow of celibacy. Celibacy does not necessitate that one be absolutely free from sex life; satisfaction with one's wife is permitted also under the vow of celibacy. The best policy is to avoid sex life altogether. That is preferable. Otherwise, a devotee can get married under religious principles and live peacefully with a wife.
(Srimad Bhagavatam-----3:27:7-----purport).

A brahmacārī practices celibacy, controlling his sex life. One cannot enjoy unrestricted sex life and practice yoga; this is rascaldom. So-called yogīs advertise that one can go on enjoying as one likes and simultaneously become a yogī, but this is totally unauthorized. It is very clearly explained here that one must observe celibacy. Brahmacaryam means that one leads his life simply in relationship with Brahman, or in full Kṛṣṇa consciousness. Those who are too addicted to sex life cannot observe the regulations which will lead them to Kṛṣṇa consciousness. Sex life should be restricted to persons who are married. A person whose sex life is restricted in marriage is also called a brahmacārī.
(Srimad Bhagavatam-----3:28:4-----purport).

Materialistic life is based on sex life. The existence of all the materialistic people, who are undergoing severe tribulation in the struggle for existence, is based on sex. Therefore, in the Vedic civilization sex life is allowed only in a restricted way; it is for the married couple and only for begetting children. But when sex life is indulged in for sense gratification illegally and illicitly, both the man and the woman await severe punishment in this world or after death. In this world also they are punished by virulent diseases like syphilis and gonorrhea, and in the next life, as we see in this passage of Śrīmad-Bhāgavatam, they are put into different kinds of hellish conditions to suffer. In Bhagavad-gītā, First Chapter, illicit sex life is also very much condemned, and it is said that one who produces children by illicit sex life is sent to hell. It is confirmed here in the Bhāgavatam that such offenders are put into hellish conditions of life in Tāmisra, Andha-tāmisra and Raurava.
(Srimad Bhagavatam-----3:30:28-----purport).

In these instructions of Lord Kapiladeva it is explained that not only is woman the gateway to hell for man, but man is also the gateway to hell for woman. It is a question of attachment. A man becomes attached to a woman because of her service, her beauty and many other assets, and similarly a woman becomes attached to a man for his giving her a nice place to live, ornaments, dress and children. It is a question of attachment for one another. As long as either is attached to the other for such material enjoyment, the woman is dangerous for the man, and the man is also dangerous for the woman. But if the attachment is transferred to Kṛṣṇa, both of them become Kṛṣṇa conscious, and then marriage is very nice. Śrīla Rūpa Gosvāmī therefore recommends:
anāsaktasya viṣayān
yathārham upayuñjataḥ
nirbandhaḥ kṛṣṇa-sambandhe
yuktaṁ vairāgyam ucyate
(Bhakti-rasāmṛta-sindhu 1.2.255)
Man and woman should live together as householders in relationship with Kṛṣṇa, only for the purpose of discharging duties in the service of Kṛṣṇa. Engage the children, engage the wife and engage the husband, all in Kṛṣṇa conscious duties, and then all these bodily or material attachments will disappear. Since the via medium is Kṛṣṇa, the consciousness is pure, and there is no possibility of degradation at any time.
(Srimad Bhagavatam-----3:31:42-----purport).

At the time of dissolution the Lord sometimes appears as a small baby lying on a leaf of a banyan tree, floating on the devastating water. Therefore Devahūti suggests, "Your lying down within the abdomen of a common woman like me is not so astonishing. You can lie down on the leaf of a banyan tree and float on the water of devastation as a small baby. It is not very wonderful, therefore, that You can lie down in the abdomen of my body. You teach us that those who are very fond of children within this material world and who therefore enter into marriage to enjoy family life with children can also have the Supreme Personality of Godhead as their child, and the most wonderful thing is that the Lord Himself licks His toe."
(Srimad Bhagavatam-----3:33:4-----purport).

Devahūti did not leave her house, because it is never recommended for a woman to leave her home. She is dependent. The very example of Devahūti was that when she was not married, she was under the care of her father, Svāyambhuva Manu, and then Svāyambhuva Manu gave her to Kardama Muni in charity. She was under the care of her husband in her youth, and then her son, Kapila Muni, was born. As soon as her son grew up, her husband left home, and similarly the son, after discharging His duty towards His mother, also left. She could also have left home, but she did not. Rather, she remained at home and began to practice bhakti-yoga as it was instructed by her great son, Kapila Muni, and because of her practice of bhakti-yoga, the entire home became just like a flower crown on the River Sarasvatī.
(Srimad Bhagavatam-----3:33:13-----purport).