The Ritwijas said : O king, there is a sacrifice advised by the celestials for you. It is known as the Snakesacrifice and is spoken of in the Puranas.
ऋत्विज ऊचुः अस्ति राजन्महत्सत्रं त्वदर्थं देवनिर्मितम्। सर्पसत्रमितिख्यातं पुराणे परिपठ्यते॥