The Mahabharata, Book 6: Bhishma Parva: Bhagavat-Gita Parva: Section CXXIV

SECTION CXXIV

"Sanjaya said,--'After Santanu's son Bhishma, O monarch, had become silent, all those rulers of earth, there present, then returned to their respective quarters. Hearing of Bhishma's slaughter that bull among men, viz., Radha's son (Karna), partially inspired with fear quickly came there. He beheld that illustrious hero lying on his bed of reeds. Then Vrisha (Karna) endued with great glory, with voice choked in tears, approaching that hero lying with eyes closed, fell at his feet. And he said,--O chief of the Kurus, I am Radha's son, who while before thy eyes, was everywhere looked upon by thee with hate!--Hearing these words, the aged chief of the Kurus,

"'Bhishma said,--If, indeed, thou art unable to cast off this fierce animosity, I permit thee, O Karna! Fight, moved by the desire of heaven! Without anger and without vindictiveness, serve thou the king according to thy power and according to thy courage and observant of the conduct of the righteous! Have then my permission, O Karna! Obtain thou that which thou seekest! Through Dhananjaya thou wilt obtain all those regions (hereafter) which are capable of being had by fulfilling the duties of a Kshatriya! Freed from pride, and relying on thy (own) might and energy, engage in battle, since a Kshatriya cannot have a (source of) greater happiness than a righteous battle. For a long while I made great efforts for bringing about peace! But I succeeded not, O Karna, in the task! Truly do I say this unto thee!--"

"'Sanjaya continued,--'After the son of Ganga had said this, Radha's son (Karna) having saluted Bhishma and obtained his forgiveness, got up on his car and proceeded towards (the quarters of) thy son.'

The End of Bhishma Parva