Mahabharata 9.47.18

9.47.18

tasyā jijñāsanārthaṃ sa bhagavānpākaśāsanaḥ |
badarāṇāmapacanaṃ cakāra vibudhādhipaḥ || 18 ||

I am seeking to please Shakra, the lord of the three worlds, with vows and rigid observances and ascetic penances!' Thus addressed by her, the illustrious god, smiling as he cast his eyes on her, and knowing her observances, addressed her sweetly, O Bharata, saying, 'Thou practisest penances of the austerest kind! This is known to me, O thou of excellent vows! That object also, cherished in thy heart, for the attainment of which thou strivest, O auspicious one, shall, O thou of beautiful face, be accomplished for thee! Everything is attainable by penances. Everything rests on penances. All those regions of blessedness, O thou of beautiful face, that belong to the gods can be obtained by penances. Penances are the root of great happiness. Those men that cast off their bodies after having practised austere penances, obtain the status of gods, O auspicious one! Bear in mind these words of mine! Do thou now, O blessed damsel, boil these five jujubes, O thou of excellent vows!' Having said these words, the adorable slayer of Vala went away, taking leave, to mentally recite certain mantras at an excellent tirtha not far from that hermitage. That tirtha came to be known in the three worlds after the name of Indra, O giver of honours! Indeed, it was for the purpose of testing the damsel's devotion that the Lord of the celestials acted in that way for obstructing the boiling of the jujubes. The damsel, O king, having cleansed herself, began her task;