Quran 8:57 — The Spoils of War (Al-Anfal)

Therefore, if you encounter them in war, you shall set them up as a deterrent example for those who come after them, that they may take heed.

[8:56] You reach agreements with them, but they violate their agreements every time; they are not righteous.

[8:58] When you are betrayed by a group of people, you shall mobilize against them in the same manner. GOD does not love the betrayers.