This monastery, said Marlia Mundell, is known as the ‘Great Monastery’ on Mount Izlo. It was founded by Abraham of Kashkar (d.588). Abraham, who was from the Kashkar region (today al-Wasit) in southern Iraq. In 571, he formed the monastic order, which consists of 12 rules and which is followed by the Eastern Syriacs. He is known for his reforms in monastic life. His followers established monasteries in various parts of Mesopotamia. Marlia Mundel-Mango examined the church of the monastery in detail and dated it to the 6th century based on its architectural decorations (Mundell Mango, Marlia. ‘Deux Églises de Mésopotamie Du Nord: Ambar et Mar Abraham de Kashkar’. Cahiers Archéologiques. Fin de l’antiquité et Moyen Âge 30 (1982): 47–70).