I'm looking for more details of a 14th century mathematician Ala-El-Din Muhammad El Ferjumedhi.
I'm translating a popular book on the history of mathematics, and there is one figure that shows a mathematical manuscript in Arabic. I could find it on Getty Images, where it carries the description "SAUDI ARABIA - CIRCA 2002: Treatise on the Question of Arithmetic Code by The Master Ala-El-Din Muhammed El Ferjumedhi, Saudi Arabia, 14th Century.", but I cannot find this mathematician anywhere, even when I search for different possible spellings of his name.
The image is here (as it's not free I'm not sure I can upload the actual image here): https://www.gettyimages.de/detail/nachrichtenfoto/treatise-on-the-question-of-arithmetic-code-by-the-nachrichtenfoto/142086185
Any more information about this is greatly appreciated...