Quran 8:39 — The Spoils of War (Al-Anfal)

You shall fight them to ward off oppression, and to practice your religion devoted to GOD alone. If they refrain from aggression, then GOD is fully Seer of everything they do.

[8:38] Tell those who disbelieved: if they stop, all their past will be forgiven. But if they return, they will incur the same fate as their previous counterparts.

[8:40] If they turn away, then you should know that GOD is your Lord and Master; the best Lord and Master, the best supporter.