This chapter gives the history of King Yayāti, the son of Nahuṣa. Among Yayāti's five sons, the youngest son, Pūru, accepted Yayāti's invalidity.
When Nahuṣa, who had six sons, was cursed to become a python, his eldest son, Yati, took sannyāsa, and therefore the next son, Yayāti, was enthroned as king. By providence, Yayāti married the daughter of Śukrācārya. Śukrācārya was a brāhmaṇa and Yayāti a kṣatriya, but Yayāti married her nonetheless. Śukrācārya's daughter, named Devayānī, had a girl friend named Śarmiṣṭhā, who was the daughter of Vṛṣaparvā. King Yayāti married Śarmiṣṭhā also.