Ibn Abd Khair narrates from his father: I saw Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) wiping over the upper part of the foot, and he was saying: If I had not seen the Prophet Muhammad (peace and blessings be upon him) wiping over the upper part, I would have thought that the lower part is more deserving of being wiped over.

Imam Humaydi (may Allah have mercy on him) states: If this incident is regarding wiping over leather socks (khuffs), then it is Sunnah, and if it is other than the leather socks, then this ruling is "abrogated."