Arabic (Original)
حَدَّثَنَا سُفْيَانُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ إِذَا كُنْتُمْ ثَلَاثَةً فَلَا يَتَنَاجَ اثْنَانِ دُونَ الثَّالِثِ وَقَالَ مَرَّةً إِنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ نَهَى أَنْ يَتَنَاجَى الرَّجُلَانِ دُونَ الثَّالِثِ إِذَا كَانُوا ثَلَاثَةً.
English Translation
Sufyan narrated to us, from 'Abdullah ibn Dinar, from Ibn 'Umar, from the Prophet, peace and blessings be upon him, who said: "If you are three, then two of you should not converse privately excluding the third." And he said another time: "The Prophet, peace and blessings be upon him, forbade two men from conversing privately excluding the third when they are three."