Did they get that from us?
I imagine. Along with the prostrations...
Maybe we should sue them for worship copyright infringement!
Yeah, every time they make a prostration, they'll have to give us a dollar.
Seriously though, I don't know if you can say that they "stole" prostration from us. I mean, even the celts prostrated before their gods, and I can only imagine that the pagan arabs did so too. It's a pretty universal form of worship.