A ‘mash transmitted this tradition saying:If religion were based on opinion, it would be more proper to wipe the under part of the feet than the upper. The Prophet (ﷺ) wiped over the upper part of his shoes. The narrator Waki’ said: I saw ‘ Ali perform ablution and wash the upper part of his feet, and say : Had I not seen the Messenger of Allah(ﷺ) doing like this –and he narrated the tradition in full

English translation · Sunan Abu Dawud