Mbh 13.51.20

"'Bhishma continued, "After this, in consequence of the energy of the great Rishi of cleansed soul, those fishermen along with all those fish through virtue of those words that he had uttered, proceeded to heaven. King Nahusha, beholding the fishermen ascending to heaven with those fishes in their company, became filled with wonder, O chief of Bharata's race. After this, the two Rishis, viz., the one born of a cow and the other who was Chyavana of Bhrigu's race, gladdened king Nahusha by granting him many boons. Then king Nahusha of great energy, that lord of all the earth, filled with joy, O best of the Bharatas, said, 'Sufficient!' Like unto a second Indra, the chief of the celestials, he accepted the boon about his own steadiness in virtue. The Rishis having granted him the boon, the delighted king worshipped them both with great reverence. As regards Chyavana, his vow having been completed, he returned to his own asylum. The Rishi that had taken his birth from the cow, and who was endued with great energy, also proceeded to his own retreat. The Nishadas all ascended to heaven as also the fishes they had caught, O monarch. King Nahusha, too, having obtained those valuable boons, entered his own city. I have thus, O son, told thee everything respecting what thou hadst asked me. The affection that is generated by the sight alone of others as also by the fact of living with them, O Yudhishthira, and the high-blessedness of kine too, and the ascertainment of true righteousness, are the topics upon which I have discoursed. Tell me, O hero what else is in thy breast."'"