Amethyst stamp seal depicting a bearded male bust, with a Middle Persian inscription reading "Himawz the high judge"
Dadwar (Middle Persian: Dādwar, meaning "bearer of law") was a Sasanian administrative office which corresponded to a sort of judge, who, as a deputy of the mowbed (chief priest), evaluated civil cases at a district level. The (ham)shahr dadwar was the head of the judiciary.
Miri, Negin (2013). "Sasanian Administration and Sealing Practices". In Potts, Daniel T. (ed.). The Oxford Handbook of Ancient Iran. Oxford University Press. ISBN978-0199733309.