47:4
So when you meet those who disbelieve, then strike the necks until when you have subdued them, then bind firmly the bond, then either a favor afterwards or ransom until lays down the war its burdens. That. And if had willed Allah surely, He could have taken re from them, but to test some of you with others. And those who are killed in (the) way (of) Allah, then never He will cause to be lost their deeds.

8:67
Not is for a Prophet that (there) should be for him prisoners of war until he has battled strenuously in the land. You desire (the) commodities (of) the world, but Allah desires (for you) the Hereafter. And Allah (is) All-Mighty, All-Wise.