Verse 191

وَٱقْتُلُوهُمْ حَيْثُ ثَقِفْتُمُوهُمْ وَأَخْرِجُوهُم مِّنْ حَيْثُ أَخْرَجُوكُمْ وَٱلْفِتْنَةُ أَشَدُّ مِنَ ٱلْقَتْلِ وَلَا تُقَـٰتِلُوهُمْ عِندَ ٱلْمَسْجِدِ ٱلْحَرَامِ حَتَّىٰ يُقَـٰتِلُوكُمْ فِيهِ فَإِن قَـٰتَلُوكُمْ فَٱقْتُلُوهُمْ كَذَٰلِكَ جَزَآءُ ٱلْكَـٰفِرِينَ

And kill them where you overcome them and evict them from where they evicted you. And indeed oppression is worse than murder. And do not fight them at the Sacred Mosque unless they fight you therein. If they attack you, then you may kill them. Such is the requital for the unfaithful.