Mbh 12.162.2b

As regards non-forgiveness and forgiveness, it should be stated that the attribute through which an esteemed and good man endures both what is agreeable and disagreeable, is said to be forgiveness. This virtue may well be acquired through the practice of truthfulness. That virtue in consequence of which an intelligent man, contented in mind and speech, achieves many good deeds and never incurs the censure of others, is called modesty. It is acquired through the aid of righteousness. That virtue which forgives for the sake of virtue and profit is called endurance. It is a form of forgiveness. It is acquired through patience, and its purpose is to attach people to one's self. The casting off of affection as also of all earthly possessions, is called renunciation. Renunciation can never be acquired except by one who is divested of anger and malice. That virtue in consequence of which one does good, with watchfulness and care, to all creatures is called goodness. It hath no particular shape and consists in the divestment of all selfish attachments. That virtue owing to which one remains unchanged in happiness and misery is called fortitude. That wise man who desires his own good always practises this virtue. One should always practise forgiveness and devotedness to truth. That man of wisdom who succeeds in casting off joy and fear and wrath, succeeds in acquiring fortitude. Abstention from injury as regards all creatures in thought, word, and deed, kindness, and gift, are the eternal duties of those who are good. These thirteen attributes, though apparently distinct from one another, have but one and the same form, viz., Truth. All these, O Bharata, support Truth and strengthen it. It is impossible, O monarch, to exhaust the merits of Truth. It is for these reasons that the Brahmanas, the Pitris, and the gods, applaud Truth. There is no duty which is higher than Truth, and no sin more heinous than untruth. Indeed, Truth is the very foundation of righteousness.