According to legend, Sarpa Satra or Snake sacrifice was a yagna performed by King Janamejaya of the Kuru Kingdom who had ascended to the throne of Hastinapura upon the death of his father Parikshit. The legend states that Parikshit, the lone descendant of the House of Pandu, son of Abhimanyu and grand son of Arjuna of the Mahabharata fame, had died of snakebite. He had been cursed by a sage to die so, the curse having been consummated by the serpent-chieftain Takshaka. Janamejaya bore a deep grudge against the serpents for this act, and thus decided to wipe them out altogether. He attempted this by performing a great Sarpa Satra – a sacrifice that would destroy all living serpents. At that time, a learned sage named Astika, a boy in age, came and intervened to stop the yagna; Astika's mother manasa was a Naga and father was Jaratkaru a saintly Brahmin. Janamejaya had to listen to the words of the learned Astika and set Takshaka free. He also stopped the massacre of the snakes (Nagas) and ended all the enmity with them. From then onward the snakes (Nagas) and Kurus lived in peace.

Manasa is a Hindu goddess of snakes. She is worshipped mainly in Bihar, Bengal, Jharkhand, South Assam and other parts of northeastern India and in Uttarakhand, chiefly for the prevention and cure of snakebite, and also for fertility and prosperity. In Hinduism, Manasa is the sister of Shesha and Vasuki, king of Nāgas (serpents), and wife of sage Jaratkaru. She is the mother of the sage Astika. She is also known as Vishahari, Nityā (eternal) and Padmavati.