Mbh 9.7.3b

Save thee there is no other person in either heaven or the whole of this world, who, O son of Kuru's race, would be able to slay the ruler of the Madras while excited with wrath in battle. Day after day engaged in fight, he agitates thy troops. For this, slay Shalya in battle, like Maghavat slaying Samvara. Treated with honour by Dhritarashtra's son, that hero is invincible in battle. Upon the fall of the ruler of the Madras in battle, thou art certain to have victory. Upon his slaughter, the vast Dhartarashtra host will be slain. Hearing, O monarch, these words of mine now, proceed, O Partha, against that mighty car-warrior, the ruler of the Madras. Slay that warrior, O thou of mighty arms, like Vasava slaying the Asura Namuchi. There is no need of showing any compassion here, thinking that this one is thy maternal uncle. Keeping the duties of a Kshatriya before thee, slay the ruler of the Madras. Having crossed the fathomless oceans represented by Bhishma and Drona and Karna, do not sink, with thy followers, in the print of a cow's hoof represented by Shalya. Display in battle the whole of thy ascetic power and thy Kshatriya energy. Slay that car-warrior." Having said these words, Keshava, that slayer of hostile heroes, proceeded to his tent in the evening, worshipped by the Pandavas. After Keshava had gone, king Yudhishthira the just, dismissing all his brothers and the Somakas, happily slept that night, like an elephant from whose body the darts have been plucked out. All those great bowmen of the Pancalas and Pandavas, delighted in consequence of the fall of Karna, slept that night happily. Its fever dispelled, the army of the Pandavas, abounding with great bowmen and mighty car-warriors having reached the shore as it were, became very happy that night, in consequence of the victory, O sire, it had won by the slaughter of Karna.'"