﴿ قُل لَّوْ شَآءَ ٱللَّهُ مَا تَلَوْتُهُۥ عَلَيْكُمْ وَلَآ أَدْرَىٰكُم بِهِۦ ۖ فَقَدْ لَبِثْتُ فِيكُمْ عُمُرًۭا مِّن قَبْلِهِۦٓ ۚ أَفَلَا تَعْقِلُونَ ﴾

“Say: "Had God willed it [otherwise], I would not have conveyed this [divine writ] unto you, nor would He have brought it to your knowledge. Indeed. a whole lifetime have I dwelt among you ere this [revelation came unto me]: will you not, then, use your reason?””

(Say) O Muhammad: (If Allah had so willed) i.e. for me not to be a Messenger (I should not have recited it to you) I should not have recited the Qur'an to you (nor would He have made it known to you) and He would not have made the Qur'an known to you. (I dwelt among you a whole lifetime) 40 years (before it) before the revelation of the Qur'an, and before that I never said anything. (Have ye then no sense?) do you not have the sense to understand that it is not of my accord?