I was with Ibn Umar along with another man when a third man approached. Ibn Umar said to us, "Step back, for the Messenger of Allah ﷺ said, 'When there are three people, two should not converse privately to the exclusion of the third.'"
حدثنا محمد بن جعفر حدثنا شعبة
كنت مع ابن عمر أنا ورجل آخر فجاء رجل فقال ابن عمر استأخرا فإن رسول الله ﷺ قال إذا كانوا ثلاثة فلا يتناجى اثنان دون واحد