Where does “bezahar” come from?

bezahar (Old Spanish) comes from Arabic بَازَهْر, from Middle Persian pʾtzhl, from Middle Persian pʾt, from Old Persian 𐎱𐎠𐎮𐎹, from Proto-Indo-Iranian paH-, from Proto-Indo-European peh₂- — to protect; to shepherd.

bezahar (Old Spanish): bezoar