Surah An-Nisa 4:140
وَقَدْ نَزَّلَ عَلَيْكُمْ فِى ٱلْكِتَـٰبِ أَنْ إِذَا سَمِعْتُمْ ءَايَـٰتِ ٱللَّهِ يُكْفَرُ بِهَا وَيُسْتَهْزَأُ بِهَا فَلَا تَقْعُدُوا۟ مَعَهُمْ حَتَّىٰ يَخُوضُوا۟ فِى حَدِيثٍ غَيْرِهِۦٓ ۚ إِنَّكُمْ إِذًا مِّثْلُهُمْ ۗ إِنَّ ٱللَّهَ جَامِعُ ٱلْمُنَـٰفِقِينَ وَٱلْكَـٰفِرِينَ فِى جَهَنَّمَ جَمِيعًا
And it has already come down to you in the Book [i.e., the Qur’ān] that when you hear the verses of Allāh [recited], they are denied [by them] and ridiculed; so do not sit with them until they enter into another conversation. Indeed, you would then be like them. Indeed, Allāh will gather the hypocrites and disbelievers in Hell all together -
Translation: Saheeh International
Tafsir
It has been revealed read active nazzala ‘He has revealed’ or passive nuzzila ‘It has been revealed’ to you in the Book in the Qur’ān in sūrat al-An‘ām Q. 668 that an has been softened and its subject omitted in other words read it as annahu ‘When you hear God’s signs the Qur’ān being disbelieved in and mocked do not …
Excerpt from Tafsir al-Jalalayn, commentary on 4:140, via Quran.com. The reader has the full commentary and 9 more tafsirs.