(Al-A’Alaa) 87 : 6
سَنُقْرِئُكَ فَلَا تَنْسَىٰ
We will surely make you read, so you won’t forget ever.
That means to illiterate Muhammad, who did not know how to read or write, the Lord’s Book will be read through Angel Jibreel, and then he will be able to read it in the future, and thereafter he will never forget it. As told in verse 2:255, none can grasp the Knowledge of the Lord except what He intends. So, whenever one reads or hears Adhikr–Lord’s Book–he should pray by soul, “Oh my Lord! Increase to me Knowledge”, as explained in verse 20:114. See explanation 75:16-19.