Hadith.5359 - Al-Hasan ibn Mahbub narrated from Ishaq ibn Ammar, who narrated from Abu Abdullah (as), who said: I asked Imam (as) about a man who slapped another man on his face, and the slap caused the skin to turn black. Imam (as) said: "If the slap causes the skin to turn black, the compensation is six dinars. If it turns green, the compensation is three dinars. If it turns red, the compensation is one and a half dinars. For the same injuries on the body, the compensation is half of that amount."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.