Al-Hakam ibn Uyaynah said that he went along with some people to Abdullah ibn Ukaym, a man of Juhaynah. al-Hakam said: They entered and I sat at the door. Then they came out and told me that Abdullah ibn Ukaym had informed them that the Messenger of Allah ﷺ had written to Juhaynah one month before his death: Do not make use of the skin or sinew of an animal which died a natural death. Abu Dawud said: Al-Nadr bin Shumail said: The skin is called ihab when it is not tanned and when it is tanned, it not called ihab but na, es shann and qirbah (tanned skin or leather).