Quran was a writing, a Book, from the very start of its revelation; and it was Mohammad pbuh who managed to keep the revelations in the Book Form constantly as it continued being revealed bit by bit. None other than the Almighty Himself testifies to it. Therefore, all theories about its “jamaa’ and tadween” in the period after Prophet Mohammad, stand invalid. These stories were concocted by enemies to relegate the stature of this Divine revelation.
Please see the divine testimony in Quran’s words about its status as a Book (having been written) even when it was still being revealed:-
1. Verse No.80/11-16
No. It indeed is a remembrance/advice; So, whoever may wish, may remember it/take advice from it; it is in exalted pages, lofty in status, written by those who were highly respected scribes.
2. Verse No.85/21-22
BUT, that is an honorable Quran; in a guarded Scripture.
3. Verse No.56/77-80
I do swear by the Galaxies; and had you known it, that ’s a great oath to take; that indeed is a respected Quran; safely placed in a written volume; none may benefit from it except those with the purity of heart and mind; gradually revealed by the Lord of the Worlds.
4. Verse No.25/5
And they say, it is the ancient scriptures that he had got written; and the same is dictated by him mornings and evenings.
5. Verse No.98/2-3
A Messenger from Allah, reciting purified written pages/scriptures, wherein are established laws.
6. Verse No.52/1-3
I swear by the Toor (Quran); and by the Book written in lines, on the widespread pages (Quran)!
7. Verse No.41/41-2
And indeed that is a dominant Book (Quran); Foul does not enter it from front or back (presently or in future); revealed gradually from the Wise and the Praiseworthy.
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"...Despite the controversy generated by Islamic historical sources, from a Quranic analysis it appears that the complete Quran was fully transcribed, compiled and committed to writing during the life of the Prophet.
From the Quran’s perspective (without question the most reliable historical source contemporaneous to the time of the Prophet), the position that a later copy had to be collated / compiled by the companions of the Prophet seems untenable.
If one accepts the testimony of the Quran, all debates surrounding the Quran being committed to writing later by the Caliphs, or the burning of certain copies, or to its insinuated redaction, missing verses, political motives, or the idea of companions writing it on leaves, animals skins or debris parchments become futile..."
http://www.quransmessage.com/.../the%20compilation%20of...