[6.1] All praise is due to Allah, Who created the heavens and the earth and made the darkness and the light; yet those who disbelieve set up equals with their Lord.
The Koran prohibits the killing of non-combatants of any religion. Not just Muslims. ISIL have now demanded people recite part of the Koran.
The Bible of Budist holy books would be as good. Muslims should lend their holy book to al ltheir friends, so they can learn some of it.
So Muslims are prohibited from being terrorists – or instantly cease to be Muslims. There will be no virgins awaiting suicide bombers – only the fires of Hell.