Where does “زَهْر” come from?

زَهْر (Arabic) comes from Ancient Greek τέσσερα, from Ancient Greek τέσσᾰρᾰ, from Ancient Greek τέσσᾰρες, from Proto-Hellenic kʷétwores, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

زَهْر (Arabic): cube, die; dice; the dice