Musannaf Ibn Abi Shayba 28:918

Waki’ narrated to us, he said: Isra’il narrated to us, from Jabir, from ‘Amir, that Dihyah al-Kalbi gifted a jubbah (outer garment) and two khuffs (leather socks) to the Prophet, may Allah bless him and grant him peace. He accepted them and wore them until he wore them out. And al-Sha’bi swears that he does not know whether they were slaughtered (i.e., made from the skin of a ritually slaughtered animal) or not.