Mahabharata Aswamedha Parva Chapter 55:2

Mahabharata Aswamedha Parva (Anugita Parva) Chapter 55:2 Thus addressed by the hunter, the ascetic showed no inclination to accept that water. The intelligent Utanka even began to censure Krishna of unfading glory. The hunter, however, repeatedly addressed the Rishi, saying,—"Drink!" The ascetic refused to drink the water thus offered. On the other hand, with heart afflicted by hunger and thirst, he even gave way to wrath. Disregarded by the high-souled Rishi through that conviction, the hunter, O king, with his pack of dogs, disappeared there and then. Beholding that (wonderful) disappearance, Utanka became filled with shame. He even thought that Krishna, that slayer of foes, had beguiled him (in the matter of the boon he had granted). Soon after, the holder of the conch and discus and mace, endued with great intelligence, came to Utanka by the way (along which the hunter had come). Addressing Krishna, the Brahmana said,—"O foremost of beings, it was scarcely proper for thee to offer water unto foremost of Brahmanas in the form of a hunter's urine, O lord." Unto Utanka who said these words, Janarddana of great intelligence replied, comforting him with many soft words—"That form which it was proper to assume for offering thee water, in that form was water offered to thee. But, also, thou couldst not understand it. The wielder of the thunder bolt, Purandara, was requested by me for thy sake. My words to that puissant deity were—'Do thou give nectar in the form of water unto Utanka.' The chief of the celestials replied to me saying—'It is not proper that a mortal should become immortal. Let some other boon be granted to Utanka.'—O son of Bhrigu's race, these words were repeatedly addressed to me. The lord of Sachi, however, was once more requested by me in these words, viz., 'even nectar should be given to Utanka.'—The chief of the celestials then, comforting me, said,—'If, O thou of great intelligence, nectar is to be given to him, I shall then assume the form of a hunter and give it to that high-souled descendant of Bhrigu's race. If that son of Bhrigu accepts it thus, I then go to him, O lord, for giving it unto him. If, however, he sends me away from disregard,—I shall not then give it to him on any account.'—Having made this compact with me, Vasava appeared before thee, in that disguise, for giving thee nectar. Thou, however, didst disregard him and send him away, seeing that the illustrious one had put on the guise of a Chandala. Thy fault has been great. Once more, with regard to thy desire, I am prepared to do what is in my power. Indeed, this painful thirst of thine, I shall arrange, shall be slaked. On those days, O regenerate one, in which thou wilt feel a desire for water, clouds well-charged with water will rise over this desert. Those clouds, O son of Bhrigu's race, will give thee savoury water to drink. Verily, those clouds will become known in the world as Utanka-clouds." Thus addressed by Krishna, Utanka became filled with gladness, and to this day, O Bharata, Utanka-clouds (appear and) shower rain on any deserts.