Sunan al-Nasa'i The Book of al-Fara' and al-'Atirah Abdullah bin 'Akaym عبد الله بن عكيم Ali bin Hujr bin Iyas bin Maqatil علي بن حجر بن إياس بن مقاتل Hilal bin 'Abdur Rahman al-Wzan هلال بن عبد الرحمن Sharayk bin 'Abdullah شريك بن عبد الله النخعي “The Messenger of Allah said: ‘Any skin that is tanned has been purified.”‘ https://parallelquran.com/hadith/sunan-al-nasai-4251/