Musannaf Ibn Abi Shaybah 1878 — Wiping over the leather socks

Ibn Buraydah narrates from his father (Sayyiduna Buraydah, may Allah be pleased with him) that on the day of the Conquest of Makkah the Messenger of Allah (peace and blessings be upon him) performed ablution and wiped over his leather socks. Sayyiduna Umar (may Allah be pleased with him) said: "O Messenger of Allah, today I have seen you do something you had never done before!" The Prophet (peace and blessings be upon him) said: "O Umar, I did it deliberately."