The Great Epic of the Bhārata dynasty 12.173.50

12.173.50

tataḥ sa munirutthāya kāśyapastamuvāca ha |
aho batāsi kuśalo buddhimāniti vismitaḥ || 50 ||

This status of a jackal that I have obtained in this life is the consequence, O regenerate one, of those sins of mine! If even after hundreds of days and nights I that am a jackal can once again obtain the status of humanity, I shall then pass my life in contentment, heedful of the true objects of existence, and engaged in sacrifices and gifts. I shall then know what should be known, and avoid what should be avoided!' Thus addressed, the ascetic Kasyapa, rising up, said, 'O, thou art certainly possessed of knowledge and great intelligence! I am really surprised at all this!' With eyes whose vision was extended by knowledge, the Brahmana then beheld that being who had addressed him to be Indra, chief of the gods and the lord of Sachi. Kasyapa then worshipped that god having the best of steeds for the animal that bore him. Receiving afterwards the god's permission, the Brahmana returned to his abode.'"