Musannaf Ibn Abi Shayba 1:1889

Hushaym narrated to us, he said: Ghaylan ibn Abdullah, the freed slave of Banu Makhzum, informed us, he said: I heard Ibn Umar, a man from the Ansar asked him about wiping over the leather socks (khuffayn). He said: Three days for the traveler, and for the resident, a day and a night.