When two people insult each other, the one who started will be the sinner until the oppressed exceeds the limits (in retorting). [Muslim]
"«المُتَسَابَّانِ ما قالا فَعَلى البَادِي منهما حتى يَعْتَدِي المَظْلُوم». [صحيح.] -"
