Heavenly Quran

The Heavenly Quran (أمّ الکتاب ), according to a common Islamic belief, is a primordial version of the revealed Quran.

History
The idea of a holy book or other religious totem being based on an archetype preserved in heaven is not unique to Islam but goes back "thousands of years" to "the early Sumerians" according to Alfred Guillaume.

In the revealed Quran
Quranic verses and  referred to “mother of the book” (umm al-kitab); verse  refers to a “well-guarded tablet” (lawh mahfuz) and  to a “concealed book” (kitab maknun). Revelation of the Quran is described as being "sent down" in verse :

"'With the truth we (God/Allah) have sent it down and with the truth it has come down'."

It is also called kalam allah — the word of God — and to most Muslims is eternal and uncreated attribute of God, as opposed to something written or created by God. The Quran that resides in heaven is distinct from the earthly Quran. It is disputed whether the revealed Quran is a precise copy of the Heavenly Quran or an abridged version. Commonly, the Injil and the Islamic notion of Torah are thought to be part of the Heavenly Quran.