It is narrated from Sayyiduna Ali bin Abi Talib (may Allah be pleased with him); he said that Bilal (may Allah be pleased with him) reported: "The Messenger of Allah (peace and blessings be upon him) used to wipe over the leather socks and the turban."
Hadith Referenceالمعجم الكبير للطبراني / باب الباء / 1015