Mbh 13.18.1a

"Vaisampayana said, 'After Vasudeva had ceased to speak, the great Yogin, viz. the Island-born Krishna, addressed Yudhisthira, saying,--"O son, do thou recite this hymn consisting of the thousand and eight names of Mahadeva, and let Maheswara be gratified with thee. In former days, O son, I was engaged in the practice of severe austerities on the breast of the mountains of Meru from desire of obtaining a son. It is this very hymn that was recited by me. As the reward of this, I obtained the fruition of all my wishes, O son of Pandu. Thou wilt also, by reciting this same hymn, obtain from Sarva the fruition of all thy wishes."--After this, Kapila, the Rishi who promulgated the doctrines that go by the name of Sankhya, and who is honoured by the gods themselves, said,--"I adore Bhava with great devotion for many lives together. The illustrious Deity at last became gratified with me and gave me knowledge that is capable of aiding the acquirer in getting over rebirth."--After this, the Rishi named Charusirsha, that dear friend of Sakra and known otherwise under the name of Alamvana's son and who is filled with compassion, said,--"I, in former days, repaired to the mountains of Gokarna and sat myself to practise severe penances for a hundred years. As the reward of those penances, I obtained from Sarva, O son of king Pandu, a hundred sons, all of whom were born without the intervention of woman, of well-restrained soul, conversant with righteousness, possessed of great splendour, free from disease and sorrow, and endued with lives extending over a hundred thousand years."--Then the illustrious Valmiki, addressing Yudhishthira, said,--"Once upon a time, in course of a dialectical disputation, certain ascetics that were possessors of the homa fire denounced me as one guilty of Brahmanicide. As soon as they had denounced me as such, the sin of Brahmanicide, O Bharata, possessed me.