Sunan Abi Dawud 583
سنن أبي داود#583Sahihحَدَّثَنَا ابْنُ مُعَاذٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، بِهَذَا الْحَدِيثِ قَالَ فِيهِ " وَلاَ يَؤُمُّ الرَّجُلُ الرَّجُلَ فِي سُلْطَانِهِ " . قَالَ أَبُو دَاوُدَ كَذَا قَالَ يَحْيَى الْقَطَّانُ عَنْ شُعْبَةَ " أَقْدَمُهُمْ قِرَاءَةً " .
The version of this tradition narrated through a different chain by Shu’bah has the words:“A man should not lead the another man in prayer. Abu Dawud said: Yahya al-Qattan narrated from Shu’bah in a similar way, i.e. the earliest of them in recitation
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: 2:193