Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) reports in a marfu’ narration that the Noble Prophet (peace and blessings be upon him) said: Tanning purifies the hide. Ibn Shayban narrated with the words «قَالَالنَّبِيُّ» and Ibn al-Muqri’ with the words «أَنَّالنَّبِيِّصَلَّىاللَّهُعَلَيْهِوَسَلَّمَقَالَ».
Hadith Referenceالمنتقى ابن الجارود / كتاب الطهارة / 61
Hadith Gradingغلام مصطفےٰ ظهير امن پوري: صحيح مسلم