The Criterion - 25:32 "The disbelievers said, "Why was not the Qur´an sent down to him at once? So We place it in his memory and recite it according to an appointed sequence."
Related:
The Criterion/25:32 "The disbelievers said, "Why was not the Qur´an sent down to him at once? So We place it in his memory and recite it according to an appointed sequence."

The Resurrection/75:17 It is for Us to collect it and to recite it.

The Most High/87:7 Except what Allah wills; He knows the manifest and the hidden.