حَدَّثَنَا يَعْلَى بْنُ عُبَيْدٍ، حَدَّثَنَا حَجَّاجٌ يَعْنِي : ابْنَ دِينَارٍ ، عَنْ أَبِي هَاشِمٍ ، عَنْ رُفَيْعٍ : أَبِي الْعَالِيَةِ ، عَنْ أَبِي بَرْزَةَ الْأَسْلَمِيِّ ، قَالَ : لَمَّا كَانَ بِأَخَرَةٍ، كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا جَلَسَ فِي الْمَجْلِسِ فَأَرَادَ أَنْ يَقُومَ، قَالَ :" سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ، أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا أَنْتَ، أَسْتَغْفِرُكَ وَأَتُوبُ إِلَيْكَ ".
فَقَالُوا : يَا رَسُولَ اللَّهِ، إِنَّكَ لَتَقُولُ الْآنَ كَلَامًا، مَا كُنْتَ تَقُولُهُ فِيمَا خَلَا، فَقَالَ : " هَذَا كَفَّارَةٌ لِمَا يَكُونُ فِي الْمَجَالِسِ "

Ya’la bin Ubaid told us, Hajjaj, meaning: Ibn Dinar, told us, on the authority of Abu Hashim, on the authority of Rafi’: Abu Al-Aliyah, on the authority of Abu Barza Al-Islami said: When he was in the afterlife, whenever the Messenger of God, may God bless him and grant him peace, was sitting in a gathering and wanted to get up, he would say: “Glory be to You.” O God, and with Your praise, I bear witness that there is no god but You, I seek Your forgiveness and I repent to You.”
They said: O Messenger of God, you are now saying something that you did not say previously. He said: “This is an expiation for what happens in the assemblies.”