Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
In some sources relating the Arab conquest of Syria, it is mentioned that the last Byzantine army the empire was able to set up in the region, took up position near Jalin before the crucial Battle of the Yarmuk in 635. The battle took place west of Jalin and led to the catastrophic defeat of the Byzantine army.
Jalin was described in the late 19th century as an impoverished village of 20 hut-like houses built either of mudbrick or stone. Its population consisted of 100 black Africans hailing from the Sudan. They were settled in two villages, Jalin and al-Shaykh Saad to the north, by Sheikh Saad ibn Abd al-Qadir, himself from the Sudan. The Africans initially came as slaves of the sheikh, but were later freed. They gradually settled in other parts of the Hauran region of southern Syria. At Jalin, the inhabitants cultivated grapes and vegetables in nearby vineyards and gardens.
J.B. Bury. The Cambridge Medieval History Series volumes 1-5. Plantagenet Publishing. Retrieved 8 February 2015. The Roman army probably took up their position near Jillin, the Jillin of the sources.
Schumacher, Oliphant and le Strange, 1889, pp. 154-155.
Jalin
Syria
