Sunan Abi Dawud 762
سنن أبي داود#762Sahihحَدَّثَنَا عَمْرُو بْنُ عُثْمَانَ، حَدَّثَنَا شُرَيْحُ بْنُ يَزِيدَ، حَدَّثَنِي شُعَيْبُ بْنُ أَبِي حَمْزَةَ، قَالَ قَالَ لِي مُحَمَّدُ بْنُ الْمُنْكَدِرِ وَابْنُ أَبِي فَرْوَةَ وَغَيْرُهُمَا مِنْ فُقَهَاءِ أَهْلِ الْمَدِينَةِ فَإِذَا قُلْتَ أَنْتَ ذَاكَ فَقُلْ " وَأَنَا مِنَ الْمُسْلِمِينَ " . يَعْنِي قَوْلَهُ " وَأَنَا أَوَّلُ الْمُسْلِمِينَ " .
Shu’aib b. Abi Hamzah said:Ibn al-Munkadir, Ibn Abi Farwah and a number of jurists of Madina said to me: When you recite the supplication “I am first of the Muslims,” say instead; “I am one of the Muslims”
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: 2:372