I was sitting with Abu Musa and 'Abdullah and they were conversing with each other and Abu Musa reported Messenger of Allah ﷺ as saying (that we find in the above-mentioned ahadith).
إِنِّي لَجَالِسٌ مَعَ عَبْدِ اللَّهِ وَأَبِي مُوسَى وَهُمَا يَتَحَدَّثَانِ فَقَالَ أَبُو مُوسَى قَالَ رَسُولُ اللَّهِ ﷺ بِمِثْلِهِ