Mishkat al-Masabih #2127

He reported God’s messenger as. saying, “O God, I have entered into a covenant with Thee which Thou wilt not break. I am only a human being, so when I have injured, reviled, cursed or beaten a believer, make that for him a mercy, a purification and a means by which Thou wilt bring him near to Thee on the day of resurrection.” (Bukhari and Muslim.)