Musannaf Ibn Abi Shaybah 401 — Ablution from copper vessels

Abd Khayr said: Once we were with Sayyiduna Ali (may Allah be pleased with him) at the Fajr prayer. When he had finished the prayer with the salam, he had a servant bring a basin of water and performed ablution from it. During the ablution he put his fingers into his ears, then said: "This is how I saw the Messenger of Allah (peace and blessings be upon him) performing ablution."