حَدَّثَنَا عَبْدُ اللَّهِ بْنُ نُمَيْرٍ، قَالَ أَخْبَرَنَا إِسْمَاعِيلُ يَعْنِي ابْنَ أَبِي خَالِدٍ، عَنْ قَيْسٍ، قَالَ قَامَ أَبُو بَكْرٍ رَضِيَ اللَّهُ عَنْهُ فَحَمِدَ اللَّهَ وَأَثْنَى عَلَيْهِ ثُمَّ قَالَ يَا أَيُّهَا النَّاسُ إِنَّكُمْ تَقْرَءُونَ هَذِهِ الْآيَةَ ‏{‏يَا أَيُّهَا الَّذِينَ آمَنُوا عَلَيْكُمْ أَنْفُسَكُمْ لَا يَضُرُّكُمْ مَنْ ضَلَّ إِذَا اهْتَدَيْتُمْ‏}‏ وَإِنَّا سَمِعْنَا رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ إِنَّ النَّاسَ إِذَا رَأَوْا الْمُنْكَرَ فَلَمْ يُنْكِرُوهُ أَوْشَكَ أَنْ يَعُمَّهُمْ اللَّهُ بِعِقَابِهِ‏.‏

It was narrated from Abu Barzah al-Aslami that he said

We were with Abu Bakr as-Siddeeq when he was conducting some business of caliphate and he got very angry with one of the Muslims. When I saw that I said: O Khaleefah of the Messenger of Allah, shall I strike his neck? When I mentioned killing him, he changed the subject completely, When we parted, Abu Bakr as Siddeeq sent word to me after that and said: O Abu Barzah, what did you say? I said: I have forgotten what I said; remind me. He said: Don't you remember what you said? I said: No, by Allah. He said: Do you remember, when you saw me get angry with that man, you said: Shall I strike his neck, O khaleefah of the Messenger of Allah? Don't you remember that? would you really have done that? I said: Yes, by Allah. If you order me to do it now, I will do it. He said: Woe to you! By Allah, that is not for anyone after Muhammad (ﷺ).