Qur'an 60:9

إِنَّمَا يَنْهَىٰكُمُ ٱللَّهُ عَنِ ٱلَّذِينَ قَـٰتَلُوكُمْ فِى ٱلدِّينِ وَأَخْرَجُوكُم مِّن دِيَـٰرِكُمْ وَظَـٰهَرُوا۟ عَلَىٰٓ إِخْرَاجِكُمْ أَن تَوَلَّوْهُمْ ۚ وَمَن يَتَوَلَّهُمْ فَأُو۟لَـٰٓئِكَ هُمُ ٱلظَّـٰلِمُونَ

Allah forbiddeth you only those who warred against you on account of religion and have driven you out from your homes and helped to drive you out, that ye make friends of them. Whosoever maketh friends of them - (All) such are wrong-doers.