Mbh 14.86.1a

"Vaisampayana said, 'Beholding those kings--lords of Earth--all conversant with the Vedas, arrive, king Yudhishthira, addressing Bhimasena, said,--"O chief of men, let proper honours be paid to these kings who have come (to my sacrifice), for these foremost of men are all worthy of the highest honours." Thus addressed by king Yudhishthira of great fame Pandu's son Bhimasena of mighty energy did as he was enjoined, assisted by the twins. The foremost of all men, viz., Govinda, came there, accompanied by the Vrishnis, and with Valadeva in the van. He was accompanied by Yuyudhana and Pradyumna and Gada, and Nisatha and Samvo and Kritavarman. The mighty car-warrior Bhima offered them the most reverential worship. Those princes then entered the palaces, adorned with gems, that were assigned to them. At the end of a conversation he had with Yudhishthira, the slayer of Madhu referred to Arjuna who had been emaciated in consequence of many fights. The son of Kunti repeatedly asked Krishna, that chastiser of foes, about Arjuna. Unto Dharma's son, the lord of all the universe began to speak about Jishnu, the son of Sakra. "O king, a confidential agent of mine residing in Dwaraka came to me. He had seen Arjuna, that foremost of Pandu's sons. Indeed, the latter has been very much emaciated with the fatigue of many battles. O puissant monarch, that agent of mine informed me that the mighty-armed hero is very near to us. Do thou set thyself to accomplish thy Horse-sacrifice." Thus addressed, king Yudhishthira the just, said unto him,--"By good luck, O Madhava, Arjuna comes back safely. I desire to ascertain from thee, O delighter of the Yadavas, what has been said in this matter by that mightiest of heroes among the sons of Pandu."