Mbh 13.152.2a

"'Bhishma said, "In this connection is cited this old narrative of a conversation between Pavana and Arjuna, O Bharata! Endued with a thousand arms and great beauty the mighty Kartavirya, in days of yore, became the lord of all the world. He had his capital in the city of Mahishmati. Of unbaffled prowess, that chief of the Haihaya race of Kshatriyas swayed the whole earth with her belt of seas, together with all her islands and all her precious mines of gold and gems. Keeping before him the duties of the Kshatriya order, as also humility and Vedic knowledge, the king made large gifts of wealth unto the Rishi Dattatreya. Indeed, the son of Kritavirya thus adored the great ascetic who, becoming pleased with him, asked him to solicit three boons. Thus requested by the Rishi in respect of boons, the king addressed him, saying, 'Let me become endued with a thousand arms when I am in the midst of my troops. While, however, I remain at home let me have, as usual only two arms! Indeed, let combatants, when engaged in battle, behold me possessed of a thousand arms, observant also of high vows, let me succeed in subjugating the whole earth by dint of my prowess. Having acquired the earth righteously, let me sway her with vigilance. There is a fourth boon which, O foremost of regenerate persons, I solicit thee to grant. O faultless one, in consequence of the disposition to favour me, it behoveth thee to grant it to me. Dependent that I am on thee, whenever I may happen to go wrong, let the righteous come forth to instruct and set me right!' Thus addressed, the Brahmana replied unto the king, saying, 'So let it be!' Even thus were those boons acquired by that king of blazing effulgence. Riding then on his car whose splendour resembled that of fire or the Sun, the monarch, blinded by his great prowess, said, 'Who, indeed, is there that can be regarded as my equal in patience and energy, in fame and heroism, in prowess and strength?