Mbh 2.72.2a

“Dhritarashtra replied.--‘O Ajatasatru, blest be thou. Go thou in peace and safety. Commanded by me, go, rule thy own kingdom with thy wealth. And, O child, take to heart this command of an old man, this wholesome advice that I give, and which is even a nutritive regimen. O Yudhishthira, O child, thou knowest the subtle path of morality. Possessed of great wisdom, thou art also humble, and thou waitest also upon the old. Where there is intelligence, there is forbearance. Therefore, O Bharata, follow thou counsels of peace. The axe falleth upon wood, not upon stone. (Thou art open to advice, not Duryodhana). They are the best of men that remember not the acts of hostility of their foes; that behold only the merits, not the faults, of their enemies; and that never enter into hostilities themselves. They that are good remember only the good deeds of their foes and not the hostile acts their foes might have done unto them. The good, besides, do good unto others without expectation of any good, in return. O Yudhishthira, it is only the worst of men that utter harsh words in quarrelling; while they that are indifferent reply to such when spoken by others. But they that are good and wise never think of or recapitulate such harsh words, little caring whether these may or may not have been uttered by their foes. They that are good, having regard to the state of their own feelings, can understand the feelings of others, and therefore remember only the good deeds and not the acts of hostility of their foes. Thou hast acted even as good men of prepossessing countenance do, who transgress not the limits of virtue, wealth, pleasure and salvation. O child, remember not the harsh words of Duryodhana. Look at thy mother Gandhari and myself also, if thou desirest to remember only what is good. O Bharata, look at me, who am thy father unto you and am old and blind, and still alive.