مسند أحمد

It was narrated that Shuraih bin Hani` said: I asked `A`ishah about wiping over the khuffain [leather slippers]. She said: Go to ‘Ali, for he knows more about that than me. So I went to `Ali (رضي الله عنه) and asked him about wiping over the khuffain. He said: The Messenger of Allah (ﷺ) used to tell us to wipe over the khuffain for one day and night, and for the traveller it is three [days and nights]. Yazeed told us: Hajjaj narrated to us and attributed it to the Prophet (ﷺ).