Mbh 7.138.1g

Approaching that multitude of elephants and getting into the midst of that fastness which was inaccessible to a car, the son of Pandu, desirous of saving his life, refrained from striking the son of Radha. Desirous of shelter, that subjugator of hostile cities viz., the son of Pritha, uplifting an elephant that had been slain by Dhananjaya with his shafts, waited there, like Hanumat uplifting the peak of Gandhamadana.[165] Karna, however, with his shafts, cut off that elephant held by Bhima. The son of Pandu, thereupon, hurled at Karna the fragments of that elephant’s body as also car-wheels and steeds. In fact, all objects that he saw lying there on the field, the son of Pandu, excited with rage, took up and hurled at Karna. Karna, however, with his sharp arrows, cut off every one of those objects thus thrown at him. Bhima also, raising his fierce fists that were endued with the force of the thunder, desired to slay the Suta’s son. Soon, however, he recollected Arjuna’s vow. The son of Pandu, therefore, though competent, spared the life of Karna, from desire of not falsifying the vow that Savyasachin had made. The Suta’s son, however, with his sharp shafts, repeatedly caused the distressed Bhima, to lose the sense. But Karna, recollecting the words of Kunti, took not the life of the unarmed Bhima. Approaching quickly Karna touched him with the horn of his bow. As soon, however, as Bhimasena was touched with the bow, excited with rage and sighing like a snake, he snatched the bow from Karna and struck him with it on the head. Struck by Bhimasena, the son of Radha, with eyes red in wrath, smiling the while, said unto him repeatedly these words, viz., “Beardless eunuch, ignorant fool and glutton.” And Karna said, “Without skill in weapons, do not fight with me. Thou art but a child, a laggard in battle! There, son of Pandu, where occurs a profusion of eatables and drink, there, O wretch, shouldst thou be but never in battle.