MAHABHARATA CHAPTER 87 PLEDGE RESPECTED

Karna said exultingly: "Foolish glutton, you do not know the science of war; why do you engage yourself in battle here? Go to the jungle and fill yourself with fruits and roots and grow fat. You are a savage, not fit for kshatriya battle. Get away!" Hurling insulting taunts at him, he made the helpless Bhima burn with rage, but mindful of his word to Kunti, refrained from killing him. MB 87 (Mahabharata Retold By C. Rajagopalachari) http://www.krishnapath.org/library/mahabharata-free-download/