 In 633, Mihran was sent on expedition against the invading Muslim Arabs as the commander of a Sasanian army, which included several officers such as Piruz Khosrow, Azadbeh Banegan, Bahman Jadhuyih, and a certain Shahrvaraz, who was related to the prominent Sasanian general and briefly king, Shahrbaraz.This army fought against the Arabs at Battle of Buwayb.Although the brother of the Arab general al-Muthanna ibn Haritha, Mas'ud ibn Haritha, was killed, the battle resulted in a defeat for the Sasanians, and resulted in the death of Mihran and Shahrvaraz.