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Vahriz was a Deylamitespahbod (commander) in the service of the Sassanid Empire of Persia (Iran). He was the head of a small expeditionary force of low ranking Azatan (Azadan) nobility numbering around 700 sent by Khosrau I to Yemen to help repel the invading Ethiopians of Axum. Vahriz was successful in expelling the invading Ethiopians from Yemen. Tabari reports that the main reason behind victory of Vahriz over Axumites of Yemen has been use of panjigan (probably a ballista equipped with heavy darts) against the Yemenites who had not encountered such a military contraption in the past. Vahriz then resided there as the Persian governor of Yemen. Yemen became a vassal state of the Sassanids until the arrival of Islam.