Mahabharata Karna parva Chapter 88:3

Mahabharata Karna parva Chapter 88:3 Thou always honourest me greatly. I, too, bear a great friendship for thee. It is for this that I say so unto thee. I shall dissuade Karna also, provided thou art inclined to peace. Discerning persons say that there are four kinds of friends, viz., those that are naturally so, those that are made so by conciliation, those that become so through wealth, and lastly those brought under subjection by the exercise of power. All these elements are owned by thee with regard to the sons of Pandu. The Pandavas, O hero, are naturally thy friends. Obtain them again as friends for certain by conciliation. If upon thyself being gratified, they agree to become friends, do thou, O king of kings, act in that way." These beneficial words having been said unto him by his friends, Duryodhana reflected for some time. Drawing deep breaths, he then, with a cheerless heart, said, "It is as thou, O friend, hast said. Listen, however, to the words that I would say unto thee. The wicked-hearted Vrikodara, having slain Duhshasana like a tiger, spoke words that still dwell in my heart. Thou also heardest the same. How then can there be peace? Arjuna again will not be able to bear Karna in battle, like a tempest whose force is weakened when encountering the mighty mountains of Meru. Nor will the sons of Pritha have the least confidence in me, thinking of the many acts of forceful hostility (done by me towards them). Nor, O preceptor's son of unfading glory, doth it behove thee to say unto Karna now 'Abstain from battle!' Phalguna is exceedingly tired today. Karna will soon slay him". Having with humility said these words repeatedly unto the preceptor's son, thy son commanded his own troops, saying, "Armed with arrows, rush against and slay these foes. Why stand ye inactive?