4241 - Qutaybah ibn Sa'id and 'Ali ibn Hujr informed us, from Sufyan, from Zayd ibn Aslam, from Ibn Wa'lah, from Ibn 'Abbas, who said: The Messenger of Allah, peace and blessings be upon him, said: "Any hide that is tanned has become purified."(1)

4242 - Al-Rabi' ibn Sulayman ibn Dawud informed me, he said: Ishaq ibn Bakr—and he is Ibn Mudar—narrated to us, my father narrated to me, from Ja'far ibn Rabi'ah, that Abu al-Khayr, from Ibn Wa'lah--------------------------------------------
= And Ahmad (27418) and al-Bukhari (6686) also narrated it via two chains from Isma'il ibn Abi Khalid, with this chain of transmission.
And it was narrated—in a similar but longer form—by Ahmad (3026), Ibn Hibban (1281) and (5415) via the route of Abu 'Awanah, and Ibn Hibban (1280) via the route of Abu al-Ahwas, both from Simak, from 'Ikrimah, from Ibn 'Abbas, without Sawdah in it.
And Ahmad (3027) narrated it via the route of Isra'il, from Simak, from 'Ikrimah, from Sawdah, without Ibn 'Abbas in it.
Al-Sindi said: His statement "maskaha" (its skin)—with a fathah on the mim and sukun on the sin—means its hide. "Shannan"—with a fathah then a shaddah—means old and worn.
(1) Its chain of transmission is authentic. Sufyan: he is Ibn 'Uyaynah, and Ibn Wa'lah: he is 'Abd al-Rahman. It is in "Al-Sunan al-Kubra" under number (4553).
And al-Tirmidhi (1728) narrated it from Qutaybah, with this chain of transmission.
And Ahmad (1895), Muslim (366): (105), Ibn Majah (3609), and Ibn Hibban (1288) narrated it via the route of Sufyan ibn 'Uyaynah, with it.
And Ahmad (2435), (2522), (2538), and (3198), Muslim (366): (105), Abu Dawud (4123), al-Tirmidhi (1728), and Ibn Hibban (1287) narrated it via multiple routes from Zayd ibn Aslam, with it.
And it will follow in a similar form in what comes after it.
Al-Sindi said: His statement "any hide that is tanned"—by its generality, it includes the skin of animals whose meat is eaten and others, and many have adopted this view.