Someone saw that Sayyiduna Amr bin al-As (may Allah be pleased with him) was on the pulpit on the day of Siffin. He said: "O servant of Allah! Straighten the rows as you trim the mustache." Then he said: "Bring the weapons." So many weapons were brought that they looked like black stones. Then he said: "These people have made a great mistake, fight them." And he said: "Hold fast to the Dajjal." Meaning Hashim bin Utbah al-A'war.