Where did Abdul Alhazred obtain his information for the Necronomicon?

Hello,

As far as I know,  both the "real" Abdul Alhazred and the "real"
Necronomicon never existed.  They were both created by writer Howard
Phillips Lovecraft in the early 1900's for his cycle of fantastic
novels collectivelly known now as "the Cthulhu Mythos".  Because of
the success of these stories, false "necronomicons" tomes were
published later, to mimic the book described by H.P. Lovecraft in his
sotries, but they surely don't originate from an "insane arab" of old
times...

Another note:

You can find more information on the Necronomicon in the website below:

http://www.answers.com/topic/necronomicon

Wezel

There's some good info here:

http://www.straightdope.com/mailbag/mnecromicon.html

Ah, I've read into a little more, and realized it is a complete fake
:).  A fictional invention by Lovecraft.  Unfortunately, I had
originally stumbled upon an "anti-faq" and didn't take the time to
read the "anti."  Thank you for the responses.