Sunan an-Nasa'i 674
سنن النسائي#674Hasanأَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ حَدَّثَنَا ابْنُ وَهْبٍ، عَنْ عَمْرِو بْنِ الْحَارِثِ، أَنَّ بُكَيْرَ بْنَ الأَشَجِّ، حَدَّثَهُ أَنَّ عَلِيَّ بْنَ خَالِدٍ الزَّرْقِيَّ حَدَّثَهُ أَنَّ النَّضْرَ بْنَ سُفْيَانَ حَدَّثَهُ أَنَّهُ، سَمِعَ أَبَا هُرَيْرَةَ، يَقُولُ كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَقَامَ بِلاَلٌ يُنَادِي فَلَمَّا سَكَتَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ قَالَ مِثْلَ هَذَا يَقِينًا دَخَلَ الْجَنَّةَ " .
An-Nasr bin Sufyan narrated that he heard Abu Hurairah say:"We were with the Messenger of Allah (S.A.W) and Bilal stood up and gave the call. When he fell silent the Messenger of Allah (ﷺ) said: 'Whoever says the same as this (what the Mu'adhdhin) with certainty, he will enter Paradise
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: 7:49