Men who do evil even in the name of your cause, are not your brothers, they are your enemies.  They will destroy your Souls!
41  I just saw the Souls of that seven destroyed!  I just saw God's Messengers destroy them. You call such as these your brothers?  If you are like them, leave my service NOW!  We are of The Light, we are of The Good, evil must never walk among us, evil is NEVER our brother.  Evil is only to be destroyed!  I have told you, be gone from me!"
42  And The Chief Captain fell to his knees, trembling, and weeping, and took Muhammed's robe, and kissed it.  "Lord!" he cried, "Forgive me.  I did not think, I did not understand.  I was confused by the horror of the moment.  I beg of you, forgive me!  Let me continue to serve you, and I will never, under any circumstances, accept evil again!  As you have taught, I will hunt it out and destroy it, no matter who does it, whether he be kinsman or friend.  I will never side with evil again!"
43  Muhamed put his hand upon the man's head. "Rise up!"  he answered, "do as you say, and you are forgiven."
44  And Muhammed returned to his tent, and laid down to rest.  "When the Physician is done," he instructed, "have him return to me.  My wound.  It feels odd, and I wish him to check it."
45  "Yes, master!" a servant answered, and hurried off.