Surah al-Baqarah 2:191-193
191. And kill them wherever you find them, and turn them out from where they have turned you out. And Al-Fitnah is worse than killing. And fight not with them at Al-Masjid-al-Haram (the sanctuary at Makkah), unless they (first) fight you there. But if they attack you, then kill them. Such is the recompense of the disbelievers.
192. But if they cease, then Allah is Oft-Forgiving, Most Merciful.
193. And fight them until there is no more Fitnah (disbelief and worshiping of others along with Allah) and (all and every kind of) worship is for Allah (Alone). But if they cease, let there be no transgression except against Az-Zalimun (the polytheists, and wrong-doers, etc.)
