﴿ أَوْ يَذَّكَّرُ فَتَنفَعَهُ ٱلذِّكْرَىٰٓ ﴾

“or have been reminded [of the truth], and helped by this reminder.”

(Or take heed) by means of the Qur'an (and so the reminder) by means of the Qur'an (might avail him?) It is also said that this means: how do you know O Muhammad, whether or not he becomes righteous and whether or not he benefits from the admonitions of the Qur'an.