Surah At-Tawbah, Verse 127

وَإِذَا مَآ أُنزِلَتۡ سُورَةٞ نَّظَرَ بَعۡضُهُمۡ إِلَىٰ بَعۡضٍ هَلۡ يَرَىٰكُم مِّنۡ أَحَدٖ ثُمَّ ٱنصَرَفُواْۚ صَرَفَ ٱللَّهُ قُلُوبَهُم بِأَنَّهُمۡ قَوۡمٞ لَّا يَفۡقَهُونَ١٢٧

wa-idhā mā unzilat sūratun naẓara baʿḍuhum ilā baʿḍin hal yarākum min aḥadin thumma inṣarafū ṣarafa l-lahu qulūbahum bi-annahum qawmun lā yafqahūna

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.