In fact...
In fact, the tradition resembles the doctrine of the anthropomorphist, who claim that the Qur’an is the eternal words of Allah, the Praised, the Exalted, and that it relates the future as if it were the past; their teaching has been refuted by the adherents of Allah's Unity (by the assertors of the Unity of Allah – ahlu 't-tawhid) in the manner demonstrated above.
The tradition that the Qur’an was revealed 'all of a piece' on the Night of Power, may bear another interpretation, that 'a piece of it' (jumlatun minhu) was revealed on the Night of Power, then the rest of what has been revealed until the death of the Prophet, may Allah bless him and his progeny, followed this.
But that it has been revealed as a whole and altogether on the Night of Power is a notion which is far from what the plain meaning of the Qur’an teaches, and is in contrast to the mutawatir traditions and the consensus of the learned divines, irrespective of their different inferences.
Chapter: As for the meaning of the speech of the Almighty Allah: And hasten not (O Muhammad) with the Qur’an ere its revelation is accomplished unto thee [20:114], there are two proper interpretations for it other than that mentioned by Abu Ja‘far, which he derived from a shadhdh tradition.
The first is that Allah, the Exalted, forbids him (Muhammad) to be hasty in the interpretation of what has been revealed to him in accordance with the rules of the language of the Arabs, though it may be permissible, and the second is that the Prophet, may Allah bless him and his progeny, used to follow Jibril in his recitation, word by word, hence, Allah, the Exalted, commanded him not to do so, but to hearken to what was brought to him by Jibril, or to what was sent down to him without intermediary till it came to an end: and when the revelation was completed, to recite it and give it utterance and declare it.
Thus, the interpretation put forward by him who relies on the tradition (mentioned above) is far from the truth, since there is no reason to maintain that Allah, the Exalted, has com- manded him not to be hasty with the Qur’an which is in the fourth heaven until it is revealed to him wholly, since he possesses no knowledge about what there is in the fourth heaven before it is revealed to him.