Wajih ad-Din Mas'ud (died 1344) was the leader of the Sarbadars of Sabzewar from 1338/1339 until his death. Under his rule, the Sarbadar state developed its characteristic dual nature as both a secular and radical Shi'i state.
Read more about Wajih Ad-Din Mas'ud: Early Reign, Conflict With Togha Temur, Sole Leadership and Death