An-Nisaa 4:90

except those who join a people with whom you have a treaty[66] 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.

[66] Believers should honor their pledges. If a party with which believers have a peace treaty accepts those who come to them seeking refuge, then, by extension, the treaty includes them as well.

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 Allāh 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 Allāh has not made for you a cause [for fighting] against them.

90. Except those who join a group, between you and whom there is a treaty (of peace), or those who approach you with their breasts restraining from fighting you as well as fighting their own people. Had Allâh willed, indeed He would have given them power over you, and they would have fought you. So if they withdraw from you, and fight not against you, and offer you peace, then Allâh has opened no way for you against them.

Except those who seek refuge with a people between whom and you there is a covenant, or (those who) come unto you because their hearts forbid them to make war on you or make war on their own folk. Had Allah willed He could have given them power over you so that assuredly they would have fought you. So, if they hold aloof from you and wage not war against you and offer you peace, Allah alloweth you no way against them.