Musannaf Ibn Abi Shaybah 40661 — reports on Siffin

Hujr bin Anbas said: During the Battle of Siffin it was said to Sayyiduna Ali (may Allah be pleased with him): "Those people have come between us and the water." He said: "Send for al-Ash'ath." Sayyiduna al-Ash'ath (may Allah be pleased with him) came and said: "Bring me the coat of mail of Ibn Sahr," a man of Banu Bara. He put that coat of mail on, then went to them and fought them until he drove them away from the water.