[@Dinh AaronMk] Not decapitation, I refer simply to the beheading of those already dead. I would not know whether beheading the living was prohibited or not (Khalid definitely didn't seem to think it was, from his many actions), but I know desecrating the dead wasn't a thing. The practice of sending heads to enemies/Caliphs was also not a thing during the Rashidun Caliphate, unless you have evidence which would make you believe otherwise. Obviously, it is an alternate timeline so it isn't a biggie either way xP

I'm assuming that those first few posts mean that the Arabs are already expanding into the Banu Ghassan region, right?