SB 9.15.40
ksamaya rocate laksmir
brahmi sauri yatha prabha
ksaminam asu bhagavams
tusyate harir isvarah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The duty of a brahmana is to culture the quality of forgiveness, which is illuminating like the sun. The Supreme Personality of Godhead, Hari, is pleased with those who are forgiving.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Different personalities become beautiful by possessing different qualities. Canakya Pandita says that the cuckoo bird, although very black, is beautiful because of its sweet voice. Similarly, a woman becomes beautiful by her chastity and faithfulness to her husband, and an ugly person becomes beautiful when he becomes a learned scholar. In the same way, brahmanas, ksatriyas, vaisyas and sudras become beautiful by their qualities. Brahmanas are beautiful when they are forgiving, ksatriyas when they are heroic and never retreat from fighting, vaisyas when they enrich cultural activities and protect cows, and sudras when they are faithful in the discharge of duties pleasing to their masters. Thus everyone becomes beautiful by his special qualities. And the special quality of the brahmana, as described here, is forgiveness.