There is no God named Allah, and Mohammed was a false prophet! Allahu fubar!
When “Mo-Mo” went into the cave, the, um, er “angel” told him they were to discard all the other gods and that the moon god was the only god. Many scholars believe that “Allah” or “Al-Ihah” (meaning “the god”) can be trace to “Ilah” (there is a symbol “-” over the “a” but I don’t know how to do it on here). “Ilah was the South Arabian moon god.
Remember, in that time and place, the people were polytheistic, until Mo came on the scene.
This is why I say “Allah” is not a real god and the term “Allah” (IMHO) is not just another term for “God” though that is how it is often used. Many people believe that the Muslims believe in the SAME God as the Jews and Christians, but, in fact, they DO not.