Sunan an-Nasa'i 4072
سنن النسائي#4072SahihIt was narrated that Abu Barzah said:"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]
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 37:107