وَعَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ
أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «مَنْ تَرَكَ مَوْضِعَ شَعَرَةٍ مِنْ جَنَابَةٍ لَمْ يَغْسِلْهَا فعل بهَا كَذَا وَكَذَا من النَّار». قَالَ عَليّ فَمن ثمَّ عاديت رَأْسِي ثَلَاثًا فَمن ثمَّ عاديت رَأْسِي ثَلَاثًا فَمِنْ ثَمَّ عَادَيْتُ رَأْسِي ثَلَاثًا
Ali reported God’s messenger as saying, “If anyone leaves a spot on a hair which has been sexually defiled without washing it, such and such an amount of hell will have to be suffered for it.” Ali said, “On that account I cut my hair; on that account I cut my hair,”* saying it three times. *Lit. “I treated my hair as an enemy.” Abu Dawud, Ahmad and Darimi transmitted it, but Ahmad and Darimi did not repeat, “On that account I cut my hair.”