Islam comes from Jewish and Christian environments. The false prophet took credit for knowledge borrowed from Jewish and Christian sources.

The false prophet was cunning and crazy.

Imagine taking a lot of Christian and Jewish scriptures.

Then this:

The Qur’an 3:85 says: “And whoever desires a religion other than Islam, it will not be accepted from him, and in the Hereafter he will be among the losers.” Muhammad and the Muhammadans are the real losers