‘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.”
Hadith Referenceمشكوة المصابيح / كتاب الطهارة / 444
Hadith Gradingالألبانی:ضَعِيف | زبیر علی زئی:إسناده حسن
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده حسن، رواه أبو داود (249) و أحمد (1/ 94 ح 727، 1/ 101 ح 1121) والدارمي (1/ 192 ح 757) [و ابن ماجه (599) ] ٭ حماد بن سلمة سمع من عطاء بن السائب قبل اختلاطه عند الجمھور .و صححه الحافظ ابن حجر في التلخيص الحبير (1/ 142) و ذکر کلامًا .»