Mbh 2.42.1b

And having heard of all this at Dwaravati, the mighty Yadava heroes Sankarshana and Janarddana also went to the capital of the Chedis, to see their father’s sister--that daughter of the Yadavas (the queen of Chedi) And saluting everybody according to his rank and the king and queen also, and enquiring after every body’s welfare, both Rama and Kesava took their seats. And after those heroes had been worshipped, the queen with great pleasure herself placed the child on the lap of Damodara. As soon as the child was placed on his lap, those superfluous arms of his fell down and the eye on his forehead also disappeared. And beholding this, the queen in alarm and anxiety begged of Krishna a boon. And she said,--‘O mighty-armed Krishna, I am afflicted with fear; grant me a boon. Thou art the assurer of all afflicted ones and that the dispeller of everybody’s fear. Thus addressed by her. Krishna, that son of the Yadu race, said--‘Fear not, O respected one. Thou art acquainted with morality. Thou needest have no fear from me. What boon shall I give thee? What shall I do, O aunt? Whether able or not, I shall do thy bidding.’--Thus spoken to by Krishna, the queen said, ‘O thou of great strength, thou wilt have to pardon the offences of Sisupala for my sake. O tiger of the Yadu race. Know O lord, even this is the boon that I ask.’ Krishna then said, ‘O aunt, even when he will deserve to be slain, I will pardon an hundred offences of his. Grieve thou not.’