Islam began with Adam and handed to Noah then to Abraham then to Moses then to Jesus and a the Prophets between each of them
Solomon
Jonah
Aaron
Lot
Sal
Jacob
Ismail
Isaac
Joseph
David
John the Baptist
And hundreds if not thousands more


It is the original creed

Pure monotheism.

Now, that's not to say that some aspects of the religion hasn't been corrupted

Like the deminsions of the kabaa, its cloth color and the vaginal shaped frame to the remnants of the black rock ...the contemporary adaption of the pagam crecent symbol ect.

But the pulp of the message is still there and it's still more monotheistic than any belief out there including the sun/son pagan worship you call christendom