I apologize if I use incorrect terminology. I noticed recently that the Christian Bible, Hebrew Bible, and the Quran tell several of the same stories. Is there a single source for them and what group of people and region would they have been from?
Can you be more specific as to which stories you're referring to? Since they're separated by hundreds of years, these three texts do explicitly integrate parts of one another, e.g. the books of the Old Testament copied from the Hebrew Bible.