Sunan an-Nasa'i 777
سنن النسائي#777Hasanأَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَهَنَّادُ بْنُ السَّرِيِّ، عَنْ حُسَيْنِ بْنِ عَلِيٍّ، عَنْ زَائِدَةَ، عَنْ عَاصِمٍ، عَنْ زِرٍّ، عَنْ عَبْدِ اللَّهِ، قَالَ لَمَّا قُبِضَ رَسُولُ اللَّهِ صلى الله عليه وسلم قَالَتِ الأَنْصَارُ مِنَّا أَمِيرٌ وَمِنْكُمْ أَمِيرٌ . فَأَتَاهُمْ عُمَرُ فَقَالَ أَلَسْتُمْ تَعْلَمُونَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَدْ أَمَرَ أَبَا بَكْرٍ أَنْ يُصَلِّيَ بِالنَّاسِ فَأَيُّكُمْ تَطِيبُ نَفْسُهُ أَنْ يَتَقَدَّمَ أَبَا بَكْرٍ قَالُوا نَعُوذُ بِاللَّهِ أَنْ نَتَقَدَّمَ أَبَا بَكْرٍ .
It was narrated that 'Abdullah said:"When the Messenger of Allah(ﷺ) passed away, the Ansar said: 'Let there be an Amir from among us and an Amir from among you.' Then 'Umar came to them and said: 'Do you not know that the Messenger of Allah(ﷺ) commanded Abu Bakr to lead the people in prayer? Who mong you could accept to put himself ahead of Abu Bakr?' They said: 'We seek refuge with Allah from putting ourselves ahead of Abu Bakr
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 10:1