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 with whom you have a treaty, or those who come to you, their hearts unwilling to fight you or their people. Had God willed, He could’ve given them power over you, and they would’ve fought you. But if they withdraw from you, don’t fight you, and offer you peace, God gives you no grounds against them.