Mbh 13.18.1b

I then, for cleansing myself, sought the protection of the sinless Isana who is irresistible in energy. I become cleansed of all my sins. That dispeller of all sorrows, viz., the destroyer of the triple city of the Asuras, said unto me,--'Thy fame shall be great in the world.'"--Then Jamadagni's son, that foremost of all righteous persons, shining like the Sun with blazing splendour in the midst of that conclave of Rishis, said unto the son of Kunti these words:--"I was afflicted with the sin, O eldest son of Pandu, of Brahmanicide for having slain my brothers who were all learned Brahmanas. For purifying myself, I sought the protection, O king, of Mahadeva. I hymned the praises of the great Deity by reciting his names. At this, Bhava became gratified with me and gave me a battle-axe and many other celestial weapons. And he said unto me,--'Thou shalt be freed from sin and thou shalt be invincible in battle; Death himself shall not succeed in overcoming thee for thou shalt be freed from disease.'--Even thus did the illustrious and crested Deity of auspicious form said unto me. Through the grace of that Deity of supreme intelligence I obtained all that He had said." Then Viswamitra said,--"I was formerly a Kshatriya. I paid my adorations to Bhava with the desire of becoming a Brahmana. Through the grace of that great Deity I succeeded in obtaining the high status of a Brahmana that is so difficult to obtain."--Then the Rishi Asita-Devala, addressing the royal son of Pandu, said,--"In former days, O son of Kunti, through the curse of Sakra, all my merit due to the acts of righteousness I had performed, was destroyed. The puissant Mahadeva it was who kindly gave me back that merit together with great fame and a long life."