 When the caliphate's prosperity declined in Iraq, so too did it in Qatar.Qatar is mentioned in 13th-century Muslim scholar Yaqut al-Hamawi's book, "Mu'jam Al-Buldan", which alludes to the Qataris' fine striped woven cloaks and their skills in improvement and finishing of spears.Much of Eastern Arabia was controlled by the Usfurids in 1253, but control of the region was seized by the prince of Ormus in 1320.