Unity or Plurality of Ancient Divine Books in the Quran

The ancient book in religious texts refers to the fact that all world events are recorded in this book before they occur. In some religious books, two ancient books are referred to:1. The book called “manifest book”, “protected tablet” and “mother of the book”; which is guarded from change and modification.2. The book which is changeable and is named” tablet” or the book of obliteration in affirmation.Those who believe that the ancient book has been of two kinds refer to verse 39 of Surah Rad (the Thunder). Using a descriptive-analytical method and through referring to the Quranic verses, this paper shows that firstly, the above mentioned verse's implication about the existence of two ancient books is uncertain, and there are varying traditions in this regard. Secondly, the guarded tablet mentioned in the Qur’an cannot be considered as evidence pointing to two kinds of the ancient book, because the Qur’an does not regard this tablet as the ancient book.