Mbh 3.99.5a

“Lomasa said, ‘Listen, O king, to the history of Rama (the son of Dasaratha) and Rama of Bhrigu’s line gifted with intelligence. For the destruction of Ravana, O king, Vishnu, in his own body, took his birth as the son of illustrious Dasaratha. We saw in Ayodhya that son of Dasaratha after he had been born. It was then that Rama of Bhrigu’s line, the son of Richika by Renuka, hearing of Rama the son of Dasaratha--of spotless deeds--went to Ayodhya, impelled by curiosity, and taking with him that celestial bow so fatal to the Kshatriyas, for ascertaining the prowess of Dasaratha’s son. And Dasaratha, hearing that Rama of Bhrigu’s race had arrived on the confines of his domains, set his own son Rama to receive the hero with respect. And beholding Dasaratha’s son approach and stand before him with ready weapons, Rama of Bhrigu’s line smilingly addressed him, O son of Kunti, saying, ‘O king, O exalted one, string, if thou canst, with all thy mighty, this bow which in my hands was made the instrument of destroying the Kshatriya race.’ Thus addressed, Dasaratha’s son answered, ‘O illustrious one, it behoveth thee not to insult me thus. Nor am I, amongst the regenerate classes, deficient in the virtues of the Kshatriya order. The descendants of Ikshwaku in special never boast of the prowess of their arms.’ Then unto Dasaratha’s son who said so, Rama of Bhrigu’s line replied, ‘A truce to all crafty speech, O king! Take this bow.’ At this, Rama the son of Dasaratha, took in anger from the hands of Rama of Bhrigu’s line that celestial bow that had dealt death to the foremost of Kshatriyas. And, O Bharata, the mighty hero smilingly strung that bow without the least exertion, and with its twang loud as the thunder-rattle, affrighted all creatures. And Rama, the son of Dasaratha, then, addressing Rama of Bhrigu’s said, ‘Here, I have strung this bow. What else, O Brahmana, shall I do for thee?’