Conversing privately (around others)
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا عِيسَى بْنُ يُونُسَ، حَدَّثَنَا الأَعْمَشُ، عَنْ أَبِي صَالِحٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم مِثْلَهُ . قَالَ أَبُو صَالِحٍ فَقُلْتُ لاِبْنِ عُمَرَ فَأَرْبَعَةٌ قَالَ لاَ يَضُرُّكَ .
A similar tradition has been transmitted by Ibn `Umar through a different chain of narrators. This version has: Abu Salih said: I asked Ibn `Umar: If they are four? He replied: Then it does not harm you.