عَنْ عَبْدِ اللَّهِ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ إِذَا كُنْتُمْ ثَلَاثَةً فَلَا يَتَنَاجَى اثْنَانِ دُونَ صَاحِبِهِمَا فَإِنَّ ذَلِكَ يُحْزِنُهُ (وَفِي لَفْظٍ) لَا يَتَسَارَّ اثْنَانِ دُونَ الثَّالِثِ إِذَا لَمْ يَكُنْ مَعَهُمْ غَيْرُهُمْ
It is narrated from Sayyiduna Abdullah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: When you are three people, then two of you should not whisper to each other leaving the third companion, because this will distress him. In another narration it is stated: Two people should not converse secretly leaving the third, when there is no one else with them.