Analysis of information sources in references of the Wikipedia article "Jund Filastin" in English language version.
From the data given above it can be concluded that the Muslim population of Central Samaria, during the early Muslim period, was not an autochthonous population which had converted to Christianity. They arrived there either by way of migration or as a result of a process of sedentarization of the nomads who had filled the vacuum created by the departing Samaritans at the end of the Byzantine period [...] To sum up: in the only rural region in Palestine in which, according to all the written and archeological sources, the process of Islamization was completed already in the twelfth century, there occurred events consistent with the model propounded by Levtzion and Vryonis: the region was abandoned by its original sedentary population and the subsequent vacuum was apparently filled by nomads who, at a later stage, gradually became sedentarized