In the spirit of the article:
Historic Islamic Depictions of Mohammed
http://www.zombietime.com/mohammed_image_archive/islamic_mo_full/
From you linked article, captioning a picture a short way down the page.....
“This Iranian site contains a photograph of a mural which appears to depict Mohammed (sixth picture down) on a contemporary building in Iran. The mural shows Buraq (the animal that carried Mohammed on his Night Voyage, described as being white and having the face of a woman and the tail of a peacock, which this creature is and does) carrying a figure who could therefore only be Mohammed.”
Bwahahaha!!! So now we know.