Mbh 1.97.5a

“About this time Pratipa, that light of the Kuru race, that bull amongst Kshatriyas, was engaged, along with his wife, in austerities from desire of offspring. And when they had grown old, a son was born unto them. This was no other than Mahabhisha. And the child was called Santanu because he was born when his father had controlled his passions by ascetic penances. And the best of Kurus, Santanu, knowing that region of indestructible bliss can be acquired by one’s deeds alone, became devoted to virtue. When Santanu grew up into a youth, Pratipa addressed him and said, ‘Some time ago, O Santanu, a celestial damsel came to me for thy good. If thou meetest that fair-complexioned one in secret and if she solicit thee for children, accept her as thy wife. And, O sinless one, judge not of the propriety or impropriety of her action and ask not who she is, or whose or whence, but accept her as thy wife at my command!’” Vaisampayana continued, ‘Pratipa, having thus commanded his son Santanu and installed him on his throne, retired into the woods. And king Santanu endued with great intelligence and equal unto Indra himself in splendour, became addicted to hunting and passed much of his time in the woods. And the best of monarchs always slew deer and buffaloes. And one day, as he was wandering along the bank of the Ganges, he came upon a region frequented by Siddhas and Charanas. And there he saw a lovely maiden of blazing beauty and like unto another Sri herself; of faultless and pearly teeth and decked with celestial ornaments, and attired in garments of fine texture that resembled in splendour the filaments of the lotus. And the monarch, on beholding that damsel, became surprised, and his raptures produced instant horripilation. With steadfast gaze he seemed to be drinking her charms, but repeated draughts failed to quench his thirst.