Quran 2:191 – Surah Al-Baqarah (The Cow)

And slay them wherever you come upon them, and expel them from where they expelled you, that is, from Mecca, and this was done after the Conquest of Mecca; sedition, their idolatry, is more grievous, more serious, than slaying, them in the Sacred Enclosure or while in a state of pilgrimage inviolability, the thing that you greatly feared. But fight them not by the Sacred Mosque, that is, in the Sacred Enclosure, until they should fight you there; then if they fight you, there, slay them, there (a variant reading drops the alif in the three verbs [sc. wa-lā taqtilūhum, hattā yaqtulūkum, fa-in qatalūkum, so that the sense is ‘slaying’ in all three, and not just ‘fighting’]) — such, killing and expulsion, is the requital of disbelievers.