Surah At-Tawbah 9:64

يَحْذَرُ ٱلْمُنَـٰفِقُونَ أَن تُنَزَّلَ عَلَيْهِمْ سُورَةٌ تُنَبِّئُهُم بِمَا فِى قُلُوبِهِمْ ۚ قُلِ ٱسْتَهْزِءُوٓا۟ إِنَّ ٱللَّهَ مُخْرِجٌ مَّا تَحْذَرُونَ

The hypocrites are apprehensive lest a sūrah be revealed about them, informing them of what is in their hearts. Say, "Mock [as you wish]; indeed, Allāh will expose that which you fear."

Translation: Saheeh International

Tafsir

The hypocrites are cautious they fear lest a sūra should be revealed to them that is to the believers informing them of what is in their the hypocrites’ hearts of hypocrisy and yet despite this they persist in mockery. …

Excerpt from Tafsir al-Jalalayn, commentary on 9:64, via Quran.com. The reader has the full commentary and 9 more tafsirs.