Quran

وَقَٰتِلُوهُمۡ حَتَّىٰ لَا تَكُونَ فِتۡنَةٞ وَيَكُونَ ٱلدِّينُ كُلُّهُۥ لِلَّهِۚ فَإِنِ ٱنتَهَوۡاْ فَإِنَّ ٱللَّهَ بِمَا يَعۡمَلُونَ بَصِيرٞ

And fight them until there is no fitnah and [until] the religion, all of it, is for Allah. And if they cease - then indeed, Allah is Seeing of what they do