I'm not Muslim. And I'm searching the answer for the first documented Quran book. Still couldn't get a certain answer. Some of my Muslim friends says it was first given to the followers. Then they memorize it and teach to the next generation. Later only which was documented in book.
Is there any first Quran book in written form?
And who was documenting the first Quran book?
Are they having the very first book as reference?
Simply I'm not referring oldest book discovered. I want to know, in history who was doing the work of writing it to a book?