Fighting
"Let those fight in the cause of Allah who sell the life of this world for the Hereafter. To him who fights in the cause of Allah, - whether he is slain or gets victory - soon shall We give him a reward of great (value). And why should you not fight in the cause of Allah and of those who, being weak, are ill-treated (and oppressed)? - men, women, and children, whose cry is: "Our Lord! rescue us from this town, whose people are oppresors; and raise for us from You one who will protect; and raise for us from You one who will help!" Those who believe fight in the cause of Allah, and those who reject Faith fight in the cause of Evil: so you fight against the friends of Satan: feeble inded is the cunning of Satan." [Qur'an 4:74-76]
Comments? I have none other than to say that this is clearly the thinking behind Al Qaida...