Surah At-Tawbah 9:127

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.

Translation: Saheeh International

Tafsir

And whenever a sūra is revealed wherein is mention of them and the Prophet s recites it they look at one another desiring to flee and saying ‘Will anyone see you?’ if you get up and flee? and so if no one can see them they get up and leave otherwise they stay put. Then they turn away persisting in their disbelief. …

Excerpt from Tafsir al-Jalalayn, commentary on 9:127, via Quran.com. The reader has the full commentary and 9 more tafsirs.