Musannaf Ibn Abi Shaybah 40643 — reports on Siffin

Habib bin Abi Thabit said: During the Battle of Siffin, the banner of Sayyiduna Ali (may Allah be pleased with him) was in the hand of Sayyiduna Hashim bin Utbah (may Allah be pleased with him). He was blind in one eye. Sayyiduna Ammar (may Allah be pleased with him) began saying: "O one-eyed man! Come forward. There is no good in a one-eyed man who does not face the alarm." So he felt ashamed and came forward. Sayyiduna Amr bin al-As (may Allah be pleased with him) said: "I see in the man with the black banner a deed such that, if he continues as he is, the Arabs will annihilate one another today." Abu al-Yaqzan (Sayyiduna Ammar) kept on until the fighting between them was held back. He was saying: "Every water has its watering place, and water is come to. O servants of Allah, be patient! Paradise is beneath the shade of the swords."