The Lord then appeared as the Kapila incarnation, being the son of the prajāpati brāhmaṇa Kardama and his wife, Devahūti, along with nine other women (sisters). He spoke to His mother about self-realization, by which, in that very lifetime, she became fully cleansed of the mud of the material modes and thereby achieved liberation, the path of Kapila.
The instructions of Lord Kapila to His mother Devahūti are fully described in the Third Canto (Chapters 25-32) of the Śrīmad-Bhāgavatam, and anyone who follows the instructions can achieve the same liberation obtained by Devahūti.
(Srimad Bhagavatam----2:7:3----purport).

The husband and wife, Kardama and Devahūti, were advanced in yoga practice; the husband was a mahā-yogī, great mystic, and the wife was a yoga-lakṣaṇa, or one advanced in yoga. They united and produced children. Formerly, after making their lives perfect, great sages and saintly persons used to beget children, otherwise they strictly observed the rules and regulations of celibacy.
(Srimad Bhagavatam----3:21:4----purport).

There were many considerations by Kardama Muni before accepting the daughter of Svāyambhuva Manu. Most important is that Devahūti had first of all fixed her mind on marrying him. She did not choose to have any other man as her husband.
(Srimad Bhagavatam----3:22:15----purport).

Kardama Muni praised the beauty and qualification of Devahūti in different ways. Devahūti was actually the ornament of all ornamented beautiful girls. A girl becomes beautiful by putting ornaments on her body, but Devahūti was more beautiful than the ornaments; she was considered the ornament of the ornamented beautiful girls. Demigods and Gandharvas were attracted by her beauty.
(Srimad Bhagavatam----3:22:18----purport).

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.
(Srimad Bhagavatam----3:22:25----purport).

O Vidura, Devahūti served her husband with intimacy and great respect, with control of the senses, with love and with sweet words.
(Srimad Bhagavatam----3:32:2----translation).

Here two words are very significant. Devahūti served her husband in two ways, viśrambheṇa and gauraveṇa. These are two important processes in serving the husband or the Supreme Personality of Godhead. Viśrambheṇa means "with intimacy," and gauraveṇa means "with great reverence." The husband is a very intimate friend; therefore, the wife must render service just like an intimate friend, and at the same time she must understand that the husband is superior in position, and thus she must offer him all respect.
(Srimad Bhagavatam----3:32:2----purport).

Although a wife may be equal to her husband in advancement in spiritual consciousness, she should not be vainly proud. Sometimes it happens that the wife comes from a very rich family, as did Devahūti, the daughter of Emperor Svāyambhuva Manu. She could have been very proud of her parentage, but that is forbidden.
(Srimad Bhagavatam----3:32:3----purport).

As soon as the wife becomes proud of her parentage, her pride creates great misunderstanding between the husband and wife, and their nuptial life is ruined.Devahūti was very careful about that, and therefore it is said here that she gave up pride completely. Devahūti was not unfaithful. The most sinful activity for a wife is to accept another husband or another lover.
(Srimad Bhagavatam----3:32:3----purport).

Devahūti engaged only in the service of Kardama Muni. She was not supposed to be so advanced in austerity, ecstasy, meditation or Kṛṣṇa consciousness, but, imperceptibly, she was sharing her husband's achievements, which she could neither see nor experience. Automatically she achieved these graces of the Lord.
(Srimad Bhagavatam----3:23:7----purport).

By the grace of Kardama Muni, Devahūti experienced actual realization simply by serving. We get a similar example in the life of Nārada Muni. In his previous life, Nārada was a maidservant's son, but his mother was engaged in the service of great devotees.
(Srimad Bhagavatam----3:23:7----purport).

By serving her devotee husband, Kardama Muni, Devahūti shared in his achievements. Similarly, a sincere disciple, simply by serving a bona fide spiritual master, can achieve all the mercy of the Lord and the spiritual master simultaneously.
(Srimad Bhagavatam----3:23:7----purport).

Although Devahūti was a princess coming from a very great royal family, fortunately she was under the supervision of her great husband, Kardama Muni, who offered her the best gift which can be bestowed in human life—the grace of the Lord, or love of God. This grace of the Lord was achieved by Devahūti by the good will and satisfaction of her husband. She served her husband, who was a great devotee and saintly person, with great sincerity, love, affection and service, and Kardama Muni was satisfied. He willingly gave love of God, and he recommended that she accept it and enjoy it because he had already achieved it.
(Srimad Bhagavatam----3:23:8----purport).

One word used in this verse, nija-dharma-dohān, is very significant. Devahūti, as the wife of Kardama Muni, achieved an invaluable gift from her husband because she was very faithful to him. For a woman the first principle of religion is to be faithful to her husband. If, fortunately, the husband is a great personality, then the combination is perfect, and the lives of both the wife and the husband are at once fulfilled.
(Srimad Bhagavatam----3:23:8----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).