أَلَمۡ تَرَ أَنَّ ٱللَّهَ يَعۡلَمُ مَا فِي ٱلسَّمَٰوَٰتِ وَمَا فِي ٱلۡأَرۡضِۖ مَا يَكُونُ مِن نَّجۡوَىٰ ثَلَٰثَةٍ إِلَّا هُوَ رَابِعُهُمۡ وَلَا خَمۡسَةٍ إِلَّا هُوَ سَادِسُهُمۡ وَلَآ أَدۡنَىٰ مِن ذَٰلِكَ وَلَآ أَكۡثَرَ إِلَّا هُوَ مَعَهُمۡ أَيۡنَ مَا كَانُواْۖ ثُمَّ يُنَبِّئُهُم بِمَا عَمِلُواْ يَوۡمَ ٱلۡقِيَٰمَةِۚ إِنَّ ٱللَّهَ بِكُلِّ شَيۡءٍ عَلِيمٌ
Have you not seen that Allah knows whatever is in the heavens and whatever is in the earth? In no way can there be a private conference among three (persons), except that He is the fourth of them, nor five (persons), except that He is the sixth of them, nor lesser than that, nor more except that He is with them, wherever they may be; thereafter He will fully inform them of whatever they have done, on the Day of the Resurrection. Surely Allah is Ever-Knowing of everything.
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 regarded (the ones) who were forbidden private (i.e., clandestine) conference? Thereafter they go back to what they were forbidden, and they confer privately together in vice and hostility, and in disobedience to the Messenger. And when they come to you, (The Prophet) they greet you with a greeting Allah has not greeted you with; and they say within themselves, "Had (your warning been true Allah would torment us for what we say!" Enough reckoning for them will be Hell, at which they will be to roast. Miserable then is the Destiny!.