Mbh 7.138.1h

Subsisting on roots, flowers, and observant of vows and austerities, thou, O Bhima, shouldst pass thy days in the woods for thou art unskilled in battle. Great is the difference between battle and the austere mode of a Muni’s life. Therefore, O Vrikodara, retire into the woods. O child, thou art not fit for being engaged in battle. Thou hast an aptitude for a life in the woods. Urging cooks and servants and slaves in the house to speed, thou art fit only for reproving them in wrath for the sake of thy dinner, O Vrikodara! O Bhima, O thou of a foolish understanding, betaking thyself to a Muni’s mode of life, gather thou fruits (for thy food). Go to the woods, O son of Kunti, for thou art not skilled in battle. Employed in cutting fruits and roots or in waiting upon guests, thou art unfit, I think, to take a part, O Vrikodara, in any passage-at-arms.” And, O monarch, all the wrongs done to him in his younger years, were also reminded by Karna in harsh words. And as he stood there in weakness, Karna once more touched him with the bow. And laughing loudly, Vrisha once more told Bhima those words, “Thou shouldst fight with others, O sire, but never with one like me. They that fight with persons like us have to undergo this and else! Go thither where the two Krishnas are! They will protect thee in battle. Or, O son of Kunti, go home, for, a child as thou art, what business hast thou with battle?” Hearing those harsh words of Karna, Bhimasena laughed aloud and addressing Karna said unto him these words in the hearing of all, “O wicked wight, repeatedly hast thou been vanquished by me. How canst thou indulge, then, in such idle boast? In this world the ancients witnessed the victory and defeat of the great Indra himself. O thou of ignoble parentage, engage thyself with me in an athletic encounter with bare arms. Even as I slew the mighty Kichaka of gigantic frame, I would then slay thee in the very sight of all kings.”