When ye encounter the infidels, strike off their heads till ye have made a great slaughter among them, and of the rest make fast the fetters. And afterwards let there either be free dismissals or ransomings, till the war hath laid down its burdens. Thus do. Were such the pleasure of God, he could himself take vengeance upon them: but He would rather prove the one of you by the other. And whoso fight for the cause of God, their works he will not suffer to miscarry;