Mahabharata Karna parva Chapter 67:2

Mahabharata Karna parva Chapter 67:2 "SIndeed, O king, the Suta's son did not become cheerless till he had a sight of us. Thou hadst first been engaged with Ashvatthama and exceedingly mangled by him. I heard that after that thou wert seen by Karna. O thou of inconceivable feats, I thought that thou must have, O king, been enjoying rest (in the camp), having come away from the cruel Karna. I have seen, O son of Pandu, the great and wonderful (Bhargava) weapon of Karna displayed in the van of battle. There is now no other warrior among the Srinjayas that is able to resist the mighty car-warrior Karna. Let Sini's grandson Satyaki and Dhrishtadyumna, O king, be the protectors of my car-wheels. Let the heroic princes Yudhamanyu and Uttamauja protect my rear. O thou of great glory, encountering that heroic and invincible car-warrior, viz., the Suta's son, staying in the hostile army, like Sakra encountering Vritra, O foremost of kings, I will, O Bharata, fight with the Suta's son if he can be found in this battle today. Come and behold me and the Suta's son contending with each other in battle for victory. There, the Prabhadrakas are rushing towards the face of a mighty bull. There, O Bharata, 6,000 princes are sacrificing themselves in battle today, for the sake of heaven. If, putting forth my strength, I do not, O king, slay Karna today with all his relatives while engaged in battle with him, then that end will be mine, O lion among kings, which is his that does not accomplish a vow taken by him. I beg of thee, bless me, saying that victory will be mine in battle. Yonder, the Dhartarashtras are about to devour Bhima. I will, O lion among kings, slay the Suta's son and his troops and all our foes!