Mahabharata 3.29.20

3.29.20

krodhāddaṇḍānmanuṣyeṣu vividhānpuruṣo nayan |
bhraśyate śīghramaiśvaryātprāṇebhyaḥ svajanādapi || 20 ||

"Listen now, O son of Virochana, to the demerits of those that are never forgiving! The man of wrath who, surrounded by darkness, always inflicteth, by help of his own energy, various kinds of punishment on persons whether they deserve them or not, is necessarily separated from his friends in consequence of that energy of his. Such a man is hated by both relatives and strangers. Such a man, because he insulteth others, suffereth loss of wealth and reapeth disregard and sorrow and hatred and confusion and enemies. The man of wrath, in consequence of his ire, inflicteth punishments on men and obtaineth (in return) harsh words. He is divested of his prosperity soon and even of life, not to say, of friends and relatives. He that putteth forth his might both upon his benefactor and his foe, is an object of alarm to the world, like a snake that hath taken shelter in a house, to the inmates thereof. What prosperity can he have who is an object of alarm to the world? People always do him an injury when they find a hole. Therefore, should men never exhibit might in excess nor forgiveness on all occasions. One should put forth his might and show his forgiveness on proper occasions. He that becometh forgiving at the proper time and harsh and mighty also at the proper time, obtaineth happiness both in this world and the other.