Question

muhammad derived many of his religious ideas from

Answer 1

The Holy Lord of-course. Who sent 124,000 messengers from time to time for betterment of human-beings.
The religion he offered is Islam, which is very much similar to other early religions, because the early religions were also from the same Lord, the only difference were the manipulations by people that replaced the real teachings of early prophets like Jesus, Abraham, Mooses and many others with the personal opinion's of their so called followers.

Answer 2

Hope that helps!<3