Mbh 3.299.1b

O thou of exceeding splendour, with thy handsome ear-rings, thou lookest beautiful, even like the Moon himself in the clear firmament, between the Visakha constellation! Dost thou know that fame availeth only the person that is living. Therefore, when the lord of the celestials will ask the ear-rings, thou shouldst, O son, refuse him! Repeating again and again answers fraught with various reasons, thou wilt, O sinless one, be able to remove the eagerness of the lord of the celestial for the possession of the ear-rings. Do thou, O Karna, after Purandara’s purpose by urging answers fraught with reason and grave import and adorned with sweetness and suavity. Thou dost always, O tiger among men, challenge him that can draw the bow with his left hand, and heroic Arjuna also will surely encounter thee in fight. But when furnished with thy ear-rings, Arjuna will never be able to vanquish thee in fight even if Indra himself comes to his assistance. Therefore, O Karna, if thou wishest to vanquish Arjuna in battle, these handsome ear-rings of thine should never be parted with to Sakra.’”