Mahabharata 3.110.8

3.110.8

kathaṃrūpā ca śāntābhūdrājaputrī yatavratā |
lobhayāmāsa yā ceto mṛgabhūtasya tasya vai || 8 ||

"Yudhishthira said, 'How was the son of Kasyapa, Rishyasringa, born of a hind? And how was he endowed with holiness, being the issue of a reprehensible sexual connexion? And for what reason was Indra, the slayer of the demons Vala and Vritra, afraid of that same sagacious boy, and poured down rain during a period of drought? And how beautiful was that princess Santa, pure in life, she who allured the heart of him when he had turned himself into a stag? And since the royal saint Lomapada is said to have been of a virtuous disposition, why was it that in his territory, Indra, the chastiser of the demon Paka, had withheld rain? O holy saint! all this in detail, exactly as it happened, thou wilt be pleased to narrate to me, for I am desirous of hearing the deeds of Rishyasringa's life.'