Yahya related to me from Malik from Yazid ibn Abdullah ibn Qusayt
from Muhammad ibn Abd ar-Rahman ibn Thawban from his mother that
A'isha, the wife of the Prophet, may Allah bless him and grant him
peace, said that the Messenger of Allah, may Allah bless him and grant
him peace, ordered that the skins of carrion be used after they had
been tanned.
Muwatta Malik Book 25, Hadith 18