They ask you of war in the holy month. Tell them: “To fight in that month is a great sin. But a greater sin in the eyes of God is to hinder people from the way of God, and not to believe in Him, and to bar access to the Holy Mosque and turn people out of its precincts; and oppression is worse than killing. They will always seek war against you till they turn you away from your faith, if they can. But those of you who turn back on their faith and die disbelieving will have wasted their deeds in this world and the next. They are inmates of Hell, and shall there abide for ever.
— Quran 2:217