Markandeyapurana 3.51

3.51

tasmaitadvacanaṃ śrutvā yogayukto 'bhavanmuniḥ /
taṃ tasya niścayaṃ jñātvā śakro 'pyāha svadehabhṛt //

“Having heard this his speech, the Muni concentrated himself in deep meditation. Perceiving that his fixed resolution, Indra, further, resuming his own form said, ‘ Ho! princely brahman, understand with thy understanding what is to be understood, O man of understanding! To prove thee have I thus transgressed, O sinless one! Pardon me then, O pure-minded one: and what wish is there of thine that may he granted? Pleased most highly am I with thee, for maintaining thy true word. Henceforth, knowledge like Indra’s shall be revealed to thee, and no obstacle shall withstand thee in austerities and holy law.’