Mahabharata 12.30.4

12.30.4

vāsudeva uvāca |
atra te kathayiṣyāmi yathā vṛttaṃ janeśvara |
nāradaḥ parvataścaiva prāgṛṣī lokapūjitau || 4 ||

"Krishna said, "I will recite to thee, O king, the facts as they happened. There are two Rishis, the foremost ones in the world, named Narada and Parvata. Narada is the maternal uncle and Parvata is his sister's son. With cheerful hearts, the uncle Narada and the nephew Parvata had, in days of old, O king, left heaven for a pleasant ramble on earth for tasting clarified butter and rice. Both of them, possessed of great ascetic merit, wandered over the earth, subsisting on food taken by human beings. Filled with joy and entertaining great affection for each other, they entered into a compact that, whatever wish, good or bad, would be entertained by one should be disclosed to the other, but on the event of one of them acting otherwise, he should be subject to the other's curse. Agreeing to that understanding, those two great Rishis, adored of all the worlds, repaired to king Srinjaya, the son of Sitya and said unto him, 'We two, for thy good, shall dwell with thee for a few days. O lord of earth, do thou attend to all our wants duly.' The king, saying, So be it, set himself to attend upon them hospitably. After a while, one day, the king filled with joy, introduced to those illustrious ascetics his daughter of the fairest complexion, saying, 'This my daughter will wait upon you both.