Mockery of the Qur'an

وَإِذَا مَآ أُنزِلَتْ سُورَةٌ نَّظَرَ بَعْضُهُمْ إِلَىٰ بَعْضٍ هَلْ يَرَىٰكُم مِّنْ أَحَدٍ ثُمَّ ٱنصَرَفُوا۟ ۚ صَرَفَ ٱللَّهُ قُلُوبَهُم بِأَنَّهُمْ قَوْمٌ لَّا يَفْقَهُونَ

And whenever a sūrah is revealed, they look at each other, [as if saying], "Does anyone see you?" and then they dismiss themselves. Allāh has dismissed their hearts because they are a people who do not understand.

مُسْتَكْبِرِينَ بِهِۦ سَـٰمِرًا تَهْجُرُونَ

In arrogance regarding it, conversing by night, speaking evil.

أَفَمِنْ هَـٰذَا ٱلْحَدِيثِ تَعْجَبُونَ

Then at this statement do you wonder?