"Abu Bakr got infuriated with a man, and I said: 'Who is he, O Khalifah of the Messenger of Allah?' He said: 'Why?' I said: 'So that I might strike his neck (killing him) if you tell me to.' He said: 'Would you really do that?' I said: 'Yes. By Allah,' the seriousness of what I said took away his anger. Then he said: 'That is not for anyone after Muhammad [SAW].'" (Using translation from Nasāʾī 4072)
تَغَيَّظَ أَبُو بَكْرٍ عَلَى رَجُلٍ فَقُلْتُ مَنْ هُوَ يَا خَلِيفَةَ رَسُولِ اللهِ ﷺ؟ قَالَ لِمَ؟ قُلْتُ لِأَضْرِبَ عُنُقَهُ إِنْ أَمَرْتَنِي بِذَلِكَ قَالَ أَوَكُنْتَ فَاعِلًا؟ قَالَ نَعَمْ قَالَ فَوَاللهِ يَعْنِي ثُمَّ ذَكَرَ كَلِمَةً مَعْنَاهَا لَأَذْهَبَ عِظَمُ كَلِمَتِيَ الَّتِي قُلْتُ غَضَبَهُ ثُمَّ قَالَ مَا كَانَتْ لِأَحَدٍ بَعْدَ مُحَمَّدٍ ﷺ