Mbh 7.146.4c

And with his keen shafts, he slew the four steeds, white in hue, of Adhiratha’s son. And then cutting into a hundred fragments the standard of Karna with a hundred arrows, that bull among men made Karna carless in the very sight of thy son. Then all thy warriors, O king, became cheerless. Then Vrishasena, the son of Karna, and Salya, the ruler of the Madras, and Drona’s son, encompassed the grandson of Sini from all sides. Then a confusion set in, and nothing could be seen. Indeed, when the heroic Karna was made carless by Satyaki, cries of Oh and Alas arose, among all thy troops. Karna also, O king, pierced by Satwata with his arrows and exceedingly weakened ascended the car of Duryodhana, sighing deeply, remembering his friendship for thy son from his childhood and having striven to realise the promise he had made about the bestowal of sovereignty on Duryodhana. After Karna hath been made carless, thy brave sons, headed by Duhsasana, O king, were not slain by the self-restrained Satyaki because the latter wished not to falsify the vow made by Bhimasena. Desirous also of not falsifying the vow formerly made by Partha (about the slaughter of Karna), Satyaki simply made those warriors carless and weakened them exceedingly, but did not deprive them of life. It is Bhima that hath vowed the slaughter of thy sons, and it is Partha that, at the time of the second match at dice, vowed the slaughter of Karna. Although all those warriors headed by Karna made strong efforts for slaying Satyaki, yet those foremost of car-warriors, failed to slay him. Drona’s son and Kritavarman and other mighty car-warriors, as also hundreds of foremost Kshatriyas, were all vanquished by Satyaki with only one bow. That hero fought, desirous of benefiting king Yudhishthira the Just, and of attaining to heaven. Indeed, Satyaki, that crusher of foes, is equal to either of the two Krishnas in energy. Smiling the while, he vanquished all thy troops, O best of men!