Page "Abdul Alhazred" Paragraph 14

Although the entrance to the chamber warns against disturbing him, Shrewsbury opens Alhazred's sarcophagus anyway, finding that only rags, bones, and dust remain of Alhazred.

However, the sarcophagus also contains Alhazred's personal, incomplete copy of the Necronomicon, written in the Arabic alphabet.

Shrewsbury then uses necromancy to recall Alhazred's spirit and orders it to draw a map of the world as he knew it.

After obtaining the map, which reveals the location of R ' lyeh and other secret places, Shrewsbury finally lets Alhazred return to his eternal rest.