﴿ وَإِذَا مَآ أُنزِلَتْ سُورَةٌۭ فَمِنْهُم مَّن يَقُولُ أَيُّكُمْ زَادَتْهُ هَٰذِهِۦٓ إِيمَٰنًۭا ۚ فَأَمَّا ٱلَّذِينَ ءَامَنُوا۟ فَزَادَتْهُمْ إِيمَٰنًۭا وَهُمْ يَسْتَبْشِرُونَ ﴾

“YET WHENEVER a surah [of this divine writ] is bestowed from on high, some of the deniers of the truth are prone to ask, "Which of you has this [message] strengthened in his faith?" Now as for those who have attained to faith, it does strengthen them in their faith, and they rejoice in the glad tiding [which God has given them].”

(And whenever a surah is revealed) whenever a verse is revealed and Muhammad (pbuh) recites it to them (there are some of them) i.e. of the hypocrites (who say) to one another: (Which one of you hath this) surah or verse (increased in faith) in fear, hope and certainty in what Muhammad (s)aid? (As for those who believe) in Muhammad (pbuh) and in hid Companions, (it hath increased them in faith) it has increased them in fear, hope and certainty (and they rejoice (therefore)) they rejoice in that which is revealed of the Qur'an.