Mahabharata Adi Parva Chapter 54

Mahabharata Adi Parva Chapter 54 "Sauti said, 'Then the snake-dame Jaratkaru, calling her own son, told him the following words according to the directions of Vasuki, the king of the snakes. 'O son, the time is come for the accomplishment of that object for which I was bestowed on thy father by my brother. Therefore, do thou that which should be done.' "Astika asked, 'Why wert thou, O mother, bestowed on my father by my uncle? Tell me all truly so that on hearing it, I may do what is proper.' "Then Jaratkaru, the sister of the king of the snakes, herself unmoved by the general distress, and even desirous of the welfare of her relatives, said unto him, 'O son, it is said that the mother of all the snakes is Kadru. Know thou why she cursed in anger her sons.' Addressing the snakes she said, 'As ye have refused to falsely represent Uchchaihsravas, the prince of horses, for bringing about Vinata's bondage according to the wager, therefore, shall he whose charioteer is Vayu burn you all in Janamejaya's sacrifice. And perishing in that sacrifice, ye shall go to the region of the unredeemed spirits.' The Grandsire of all the worlds spake unto her while uttering this curse, 'Be it so,' and thus approved of her speech. Vasuki, having heard that curse and then the words of the Grandsire, sought the protection of the gods, O child, on the occasion when the amrita was being churned for. And the gods, their object fulfilled, for they had obtained the excellent amrita, with Vasuki ahead, approached the Grandsire. And all the gods, with king Vasuki, sought to incline Him who was born of the lotus to be propitious, so that the curse might be made abortive.' "And the gods said, 'O Lord, Vasuki, the king of the snakes, is sorry on account of his relatives. How may his mother's curse prove abortive?' "Brahman thereupon replied, saying, 'Jaratkaru will take unto himself a wife of the name of Jaratkaru; the Brahmana born of her will relieve the snakes.' "Vasuki, the best of snakes, hearing those words, bestowed me, O thou of godlike looks, on thy high-souled father some time before the commencement of the sacrifice. And from that marriage thou art born of me. That time has come. It behoveth thee to protect us from this danger. It behoveth thee to protect my brother and myself from the fire, so that the object, viz., our relief, for which I was bestowed on thy wise father, may not be unfulfilled. What dost thou think, O son?' "Sauti continued, 'Thus addressed, Astika said unto his mother, 'Yes, I will.' And he then addressed the afflicted Vasuki, and as if infusing life into him, said, 'O Vasuki, thou best of snakes, thou great being, truly do I say, I shall relieve thee from that curse. Be easy, O snake! There is no fear any longer.