Mahabharata Adi Parva Chapter 76

Mahabharata Adi Parva Chapter 76 "Janamejaya said, 'O thou of the wealth of asceticism, tell me how our ancestor Yayati, who is the tenth from Prajapati, obtained for a wife the unobtainable daughter of Sukra. I desire to hear of it in detail. Tell me also, one after another, of those monarchs separately who were the founders of dynasties.' "Vaisampayana said, 'The monarch Yayati was in splendour like unto Indra himself. I will tell thee, in reply to thy question, O Janamejaya, how both Sukra and Vrishaparvan bestowed upon him, with due rites, their daughters, and how his union took place with Devayani in special. "Between the celestials and the Asuras, there happened, of yore, frequent encounters for the sovereignty of the three worlds with everything in them. The gods, then, from desire of victory, installed the son of Angiras (Vrihaspati) as their priest to conduct their sacrifices; while their opponents installed the learned Usanas as their priest for the same purpose. And between those two Brahmanas there are always much boastful rivalry. Those Danavas assembled for encounter that were slain by the gods were all revived by the seer Sukra by the power of his knowledge. And then starting again, into life,—these fought with the gods. The Asuras also slew on the field of battle many of the celestials. But the open-minded Vrihaspati could not revive them, because he knew not the science called Sanjivani (re-vivification) which Kavya endued with great energy knew so well. And the gods were, therefore, in great sorrow. And the gods, in great anxiety of heart and entertaining a fear of the learned Usanas, then went to Kacha, the eldest son of Vrihaspati, and spoke unto him, saying, 'We pay court to thee, be kind to us and do us a service that we regard as very great. That knowledge which resides in Sukra, that Brahmana of immeasurable prowess, make thy own as soon as thou canst. Thou shalt find the Brahmana in the court of Vrishaparvan. He always protects the Danavas but never us, their opponents. Thou art his junior in age, and, therefore, capable of adoring him with reverence. Thou canst also adore Devayani, the favourite daughter of that high-souled Brahmana. Indeed, thou alone art capable of propitiating them both by worship. There is none else that can do so. By gratifying Devayani with thy conduct, liberality, sweetness, and general behaviour, thou canst certainly obtain that knowledge.' The son of Vrihaspati, thus solicited by the gods, said 'So be it, and went to where Vrishaparvan was. Kacha, thus sent by the gods, soon went to the capital of the chief of the Asuras, and beheld Sukra there. And beholding him, he thus spoke unto him, 'Accept me as thy disciple. I am the grandson of the Rishi Angiras and son of Vrihaspati. By name I am known as Kacha. Thyself becoming my preceptor, I shall practise the Brahmacharya mode of life for a thousand years. Command me, then, O Brahmana!'