Ibn Hawqal
The geographers Ibn Hawqal (d. ) and Estakhri (d. 957) noted the Ghawr (Jordan Valley) district, the low-lying area along the Jordan River between Lake Tiberias to the Dead Sea, with its capital at Jericho (Ariha in Arabic), was administratively subordinate to Urdunn. The geographer al-Ya'qubi (d. 892) held that the Ghawr was subordinate to Jund Dimashq.