Mahabharata 3.110.2

3.110.2

āśramaścaiva puṇyākhyaḥ kāśyapasya mahātmanaḥ |
ṛśyaśṛṅgaḥ suto yasya tapasvī saṃyatendriyaḥ || 2 ||

"Lomasa said, 'This is the pure divine river by name Kausiki. O chief of Bharata's race! and this is the delightful hermitage of Viswamitra, conspicuous here. And this is a hermitage, with a holy name, belonging to Kasyapa of mighty soul; whose son was Rishyasringa, devoted to penances, and of passions under control. He by force of his penances caused Indra to rain; and that god, the slayer of the demons Vala and Vritra, dreading him, poured down rain during a drought. That powerful and mighty son of Kasyapa was born of a hind. He worked a great marvel in the territory of Lomapada. And when the crops had been restored, king Lomapada gave his daughter Santa in marriage to him, as the sun gave in marriage his daughter Savitri.'