Mahabharata Bhishma Parva Chapter 43:6

Mahabharata Bhishma Parva (Bhagavat-Gita Parva) Chapter 43:6 And the elder brother of Gada, for the sake of the Pandavas, then said to Karna,—'It hath been heard by me, O Karna, that from hatred of Bhishma thou wilt not fight. Come to our side, O son of Radha, and (stay with us) as long as Bhishma is not slain. After Bhishma is slain, O son of Radha, thou mayst then again engage in battle on Duryodhana's side, if thou hast no preference for any of the parties. Karna said, 'I will not do anything that is disagreeable to Dhritarashtra's son, O Kesava. Devoted to Duryodhana's good, know that I have cast off my life (for him).'—Hearing these words (of Karna), Krishna ceased, O Bharata, and reunited himself with the sons of Pandu headed by Yudhishthira. Then amid all the warriors the eldest son of Pandu, loudly exclaimed,—'He who will choose us, him we shall choose for our ally!'—Casting his eyes then upon them, Yuyutsu said these words, with a cheerful heart, unto Kunti's son king Yudhishthira the Just,—'I will fight under thee in battle, for the sake of you all, with the sons of Dhritarashtra, if, O king, thou wilt accept me, sinless one. Yudhishthira said, 'Come, come, all of us will fight with thy foolish brothers. O Yuyutsu, both Vasudeva and we all say to thee—"I accept thee, O thou of mighty arms, fight for my cause. On thee rests, it seems, the thread of Dhritarashtra's line as also his funeral cake. O prince, O thou of great splendour, accept us that accept thee. The wrathful Duryodhana of wicked understanding will cease to live. Sanjaya continued, "Yuyutsu then, abandoning the Kurus thy sons, went over to the army of the Pandavas, with beat of drums and cymbals. Then king Yudhishthira of mighty arms, filled with joy, again put on his shining coat of mail of golden effulgence. And those bulls among men then mounted their respective cars. And they counter-arrayed their troops in battle-array as before. And they caused drums and cymbals in many hundreds to be sounded. And those bulls among men also set up diverse leonine roars. And beholding those tigers among men, viz., the sons of Pandu, on their cars, the kings (on their side) with Dhrishtadyumna and others, once more set up shouts of joy. And beholding the nobility of the sons of Pandu who had paid due honour to those that were deserving of honour, all the kings there present applauded them highly. And the monarchs, talked with one another about the friendship, the compassion, and the kindness to kinsmen, displayed at the proper season by those high-souled personages. Excellent,—Excellent,—were the delightful words everywhere bruited about, coupled with eulogistic hymns about those famous men. And in consequence of this the minds and hearts of every one there were attracted towards them. And the Mlecchas and the Aryas there who witnessed or heard of that behaviour of the sons of Pandu, all wept with choked voices. And those warriors then, endued with great energy, caused large drums and Pushkaras by hundreds upon hundreds to be sounded and also blew their conches all white as the milk of cows.