How Devayānī became self-realized by the grace of her great husband, Mahārāja Yayāti, is described here. Describing such realization is another way of performing the bhakti process.

śravaṇaṁ kīrtanaṁ viṣṇoḥ
 smaraṇaṁ pāda-sevanam
arcanaṁ vandanaṁ dāsyaṁ
 sakhyam ātma-nivedanam

“Hearing and chanting about the transcendental holy name, form, qualities, paraphernalia and pastimes of Lord Viṣṇu, remembering them, serving the lotus feet of the Lord, offering the Lord respectful worship, offering prayers to the Lord, becoming His servant, considering the Lord one’s best friend, and surrendering everything unto Him — these nine processes are accepted as pure devotional service.” (Bhāg. 7.5.23) Śravaṇaṁ kīrtanam, hearing and chanting, are especially important. By hearing from her husband about the greatness of Lord Vāsudeva, Devayānī certainly became convinced and surrendered herself unto the lotus feet of the Lord (oṁ namo bhagavate vāsudevāya). This is knowledge. Bahūnāṁ janmanām ante jñānavān māṁ prapadyate. Surrender to Vāsudeva is the result of hearing about Him for many, many births. As soon as one surrenders unto Vāsudeva, one is liberated immediately. Because of her association with her great husband, Mahārāja Yayāti, Devayānī became purified, adopted the means of bhakti-yoga, and thus became liberated.

Thus end the Bhaktivedanta purports of the Ninth Canto, Nineteenth Chapter, of the Śrīmad-Bhāgavatam, entitled “King Yayāti Achieves Liberation.”