Mbh 5.159.1b

He had set out in pursuit, having sworn that he would not return without having slain Janardana. And accompanied by a large army consisting of four kinds of forces that occupied (as it marched) a very large portion of the earth, accoutred in handsome coats of mail and armed with diverse weapons and resembling the swollen current of the Ganga, that foremost of all wielders of weapons set out in pursuit of Vasudeva of Vrishni’s race. And having come up to him of Vrishni’s race who was lord and master of everything obtainable by ascetic austerities, Rukmi, O king, was vanquished and covered with shame. And for this he returned not to (his city) Kundina. And on the spot where that slayer of hostile heroes was vanquished by Krishna, he built an excellent city named Bhojakata. And, O king, that city filled with large forces and teeming with elephants and steeds, is widely known on the earth by that name. Endued with great energy, that hero, cased in mail and armed with bows, fences, swords and quivers, quickly entered the Pandava camp, surrounded by an Akshauhini of troops. And Rukmi entered that vast army, under a standard effulgent as the sun, and made himself known to the Pandavas, from desire of doing what was agreeable to Vasudeva. King Yudhishthira, advancing a few steps, offered him worship. And duly worshipped and eulogised by the Pandavas, Rukmi saluted them in return and rested for a while with his troops. And addressing Dhananjaya, the son of Kunti in the midst of the heroes there assembled, he said, ‘If, O son of Pandu, thou art afraid, I am here to render thee assistance in the battle. The assistance I will give thee will be unbearable by thy foes. There is no man in this world who is equal to me in prowess. I will slay those foes of thine whom thou, O son of Pandu, wilt assign to me. I will slay one of those heroes, viz., Drona and Kripa, and Bhishma, and Karna. Or, let all these kings of the earth stand aside.