ذِكْرُ الزَّجْرِ عَنْ تَنَاجِي الْمُسْلِمَيْنِ بِحَضْرَةِ ثَالِثٍ مَعَهُمَا
"The Messenger of Allah ﷺ forbade two to converse (privately) to the exclusion of a third." (Using translation from Ibn Mājah 3776)
قَالَ رَسُولُ اللَّهِ ﷺ «لَا يَتَنَاجَى اثْنَانِ دُونَ الثَالِثٍ»