Surah An-Nisa, verse 90

إِلَّا ٱلَّذِينَ يَصِلُونَ إِلَىٰ قَوْمٍۭ بَيْنَكُمْ وَبَيْنَهُم مِّيثَـٰقٌ أَوْ جَآءُوكُمْ حَصِرَتْ صُدُورُهُمْ أَن يُقَـٰتِلُوكُمْ أَوْ يُقَـٰتِلُوا۟ قَوْمَهُمْ ۚ وَلَوْ شَآءَ ٱللَّهُ لَسَلَّطَهُمْ عَلَيْكُمْ فَلَقَـٰتَلُوكُمْ ۚ فَإِنِ ٱعْتَزَلُوكُمْ فَلَمْ يُقَـٰتِلُوكُمْ وَأَلْقَوْا۟ إِلَيْكُمُ ٱلسَّلَمَ فَمَا جَعَلَ ٱللَّهُ لَكُمْ عَلَيْهِمْ سَبِيلًا ﴿٩٠﴾

4:90 except those who join a people with whom you have a treaty or those who come to you feeling discomfort to fight you or fight their own people. If Allah had willed, He would have empowered them to fight you. Therefore if they withdraw and refrain from fighting you and offer you peace, then Allah has not given you permission [to fight] against them