سورة Al-Qasas ( The Stories ) - الآية 15

Once he entered the city, unnoticed by its people. He found in it two men fighting—one of his own sect, and one from his enemies. The one of his sect solicited his assistance against the one from his enemies; so Moses punched him, and put an end to him. He said, “This is of Satan's doing; he is an enemy that openly misleads.”