أَلَمۡ تَرَ إِلَى ٱلَّذِينَ نُهُواْ عَنِ ٱلنَّجۡوَىٰ ثُمَّ يَعُودُونَ لِمَا نُهُواْ عَنۡهُ وَيَتَنَٰجَوۡنَ بِٱلۡإِثۡمِ وَٱلۡعُدۡوَٰنِ وَمَعۡصِيَتِ ٱلرَّسُولِۖ وَإِذَا جَآءُوكَ حَيَّوۡكَ بِمَا لَمۡ يُحَيِّكَ بِهِ ٱللَّهُ وَيَقُولُونَ فِيٓ أَنفُسِهِمۡ لَوۡلَا يُعَذِّبُنَا ٱللَّهُ بِمَا نَقُولُۚ حَسۡبُهُمۡ جَهَنَّمُ يَصۡلَوۡنَهَاۖ فَبِئۡسَ ٱلۡمَصِيرُ
Have you not seen those who were forbidden from holding secret talks, yet they go back to do what they were forbidden from, conspiring in sin and aggression, and in disobedience to the Messenger? When they come to you, they greet you other than the way Allah greets you, and they say to one another, “Why does Allah not punish us for what we say?” Sufficient is Hell for them; they will enter it. What a terrible destination!
- This is referring to the Jews who used to play with words while addressing the Prophet (ﷺ) to ridicule him, saying "Asāmu ‘alaikum" (death be upon you) instead of "Asalamu ‘alaikum" (peace be upon you).