The Ruling On Gelatin Derived From Pork and Food Containing Alcohol | Mūsá Richardson
Source: Class #02 of Moosaa Richardson's explanation of The Six Principles (al-Usool as-Sittah) http://store.mpubs.org/the-six-principles-of-imaam-muhammad-ibn-abdul-wahhaab-read-by-abul-abbaas-moosaa-richardson/