The building at Il-Umta'iyeh locally called Mosque was according to H.C. Butler a Nabatean Temple. The date of this temple is uncertain.
Sources:
- Howard Crosby Butler eds., Syria: publications of the Princeton University Archaeological Expeditions to Syria in 1904 - 5 and 1909 (Div. 2, Sect. A ; 2) — 1909, pp. 88-91 https://doi.org/10.11588/diglit.45581
- Howard Crosby Butler: Early Churches in Syria. Fourth to Seventh Centuries. Princeton University Press, Princeton 1929 INTERNET ARCHIVE https://archive.org/details/h-c-butler-early-churches-in-syria-fourth-to-seventh-centuries