Explicit context of warfare for "whom your right hand possesses" in the Quran?

I've recently come across the claim by Quranists that what is commonly translated as "whom your right hand possesses" in the Quran (e.g. [33:50](https://www.quran.com/33/50)) actually refers to oaths and that the Quran itself never contains an explicit context of warfare or prisoners of war. Not being able to read Arabic, I'm curious whether this is true. Question: which verses in the Quran explicitly talk about prisoners of war in the context of "whom your right hand possesses", if any?