Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrates that once Sayyiduna Ali (may Allah be pleased with him) came to my house. He asked for water for ablution. We brought him a bowl in which there was about a mudd or close to it of water, and placed it before him. At that time, he had finished relieving himself. He said to me: O Ibn Abbas! Shall I not show you how the Prophet (peace and blessings be upon him) performed ablution? I said: Why not? May my parents be sacrificed for you. So, a vessel was placed for his ablution. First, he washed both hands, rinsed his mouth, put water into his nose and cleaned it, then took water in both hands and wiped it over his face, and with his thumb, he put water on the front part of his ears, and did this three times. Then, with his right hand, he took a handful of water and poured it on his forehead so that it would flow over his face. Then he washed his right arm up to and including the elbow three times, and washed his left arm in the same way, wiped his head and ears, then took water in both hands and poured it over his feet, while he was wearing shoes. Then he moved the shoe and did the same with the other foot. I asked: Is ablution valid while wearing shoes? He replied: Yes, it is valid. This question and answer happened three times.