﴿ وَقَدْ نَزَّلَ عَلَيْكُمْ فِى ٱلْكِتَٰبِ أَنْ إِذَا سَمِعْتُمْ ءَايَٰتِ ٱللَّهِ يُكْفَرُ بِهَا وَيُسْتَهْزَأُ بِهَا فَلَا تَقْعُدُوا۟ مَعَهُمْ حَتَّىٰ يَخُوضُوا۟ فِى حَدِيثٍ غَيْرِهِۦٓ ۚ إِنَّكُمْ إِذًۭا مِّثْلُهُمْ ۗ إِنَّ ٱللَّهَ جَامِعُ ٱلْمُنَٰفِقِينَ وَٱلْكَٰفِرِينَ فِى جَهَنَّمَ جَمِيعًا ﴾

“And, indeed, He has enjoined upon you in this divine writ that whenever you hear people deny the truth of God's messages and mock at them, you shall avoid their company until they begin to talk of other things - or else, verily, you will become like them. Behold, together with those who deny the truth God will gather in hell the hypocrites,”

(He hath already revealed unto you in the Scripture) He has already commanded you in the Qur'an when you were in Mecca (that, when ye hear the revelations of Allah) when you hear the mention of Muhammad and the Qur'an (rejected and derided) when Muhammad and the Qur'an are rejected and derided, ((ye) sit not with them (who disbelieve and mock)) and engage in the same conversation (until they engage in some other conversation) other than about Muhammad and the Qur'an. (Lo! in that case (if ye stayed)) i.e. if you sit with them without being coerced to do so (ye would be like unto them) in engaging in the same conversation and in showing derision. (Lo! Allah will gather hypocrites) the hypocrites of Medina: 'Abdullah Ibn Ubayy and his followers (and disbelievers) the disbelievers of Mecca: Abu Jahl and his followers, and the disbelievers of Medina: Ka'b and his followers, (all together, into hell);