Sunan Abi Dawud 4269
سنن أبي داود#4269Sahihحَدَّثَنَا مُحَمَّدُ بْنُ الْمُتَوَكِّلِ الْعَسْقَلاَنِيُّ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، حَدَّثَنَا مَعْمَرٌ، عَنْ أَيُّوبَ، عَنِ الْحَسَنِ، بِإِسْنَادِهِ وَمَعْنَاهُ مُخْتَصَرًا . قَالَ أَبُو دَاوُدَ لِمُحَمَّدٍ - يَعْنِي ابْنَ الْمُتَوَكِّلِ - أَخٌ ضَعِيفٌ يُقَالُ لَهُ الْحُسَيْنُ .
The tradition mentioned above has also been transmitted briefly by al-Hasan through a different chain of narrators to the same effect
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:
Al-AlbaniDaif
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (2888)
In-book reference: 37:30