Mad Mo originally wanted Saturday as the holy day. And then he had a mysterious brain wave to pick Friday. I remember reading about a German scholar who and expert on Aramaic,who revealed that large portions of the koran were copy and paste of Aramaic writings. I think he got a lot of death threats. An Aramaic dialect was of course one of the languages Jesus used. The koran has references to Jews being ‘apes and pigs’. Mad Mo was a Jew hater extraordinaire. Little wonder the Austrian nutcase had good things to say about him
I had never heard this so I did a quick web search and found a book called The Syro-Aramaic Reading of the Koran.