إِلَّا الَّذينَ يَصِلونَ إِلىٰ قَومٍ بَينَكُم وَبَينَهُم ميثاقٌ أَو جاءوكُم حَصِرَت صُدورُهُم أَن يُقاتِلوكُم أَو يُقاتِلوا قَومَهُم ۚ وَلَو شاءَ اللَّهُ لَسَلَّطَهُم عَلَيكُم فَلَقاتَلوكُم ۚ فَإِنِ اعتَزَلوكُم فَلَم يُقاتِلوكُم وَأَلقَوا إِلَيكُمُ السَّلَمَ فَما جَعَلَ اللَّهُ لَكُم عَلَيهِم سَبيلًا

Except for those who take refuge with a people between yourselves and whom is a treaty or those who come to you, their hearts strained at [the prospect of] fighting you or fighting their own people. And if Allah had willed, He could have given them power over you, and they would have fought you. So if they remove themselves from you and do not fight you and offer you peace, then Allah has not made for you a cause [for fighting] against them.