“English-speaking Muslims often speak of the Qur’an as their Holy Book. Just like Christians for example refer to the Bible as their Holy Book.
I am not sure the Qur’an ever said or suggested that it was anyone’s Holy Book. I am also not sure if questions like this even matter to Muslims.
In the same way, I am not even sure if it is blasphemy to refer to the Qur’an as Muslims’ Holy Book.” (Dr. Pasha)