Sahih Muslim 1340
صحيح مسلم#1340Sahihوَحَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمٍ، حَدَّثَنَا مُحَمَّدُ بْنُ بَكْرٍ، أَخْبَرَنَا ابْنُ جُرَيْجٍ، أَخْبَرَنِي عَبْدَةُ بْنُ أَبِي لُبَابَةَ، أَنَّ وَرَّادًا، مَوْلَى الْمُغِيرَةِ بْنِ شُعْبَةَ قَالَ كَتَبَ الْمُغِيرَةُ بْنُ شُعْبَةَ إِلَى مُعَاوِيَةَ - كَتَبَ ذَلِكَ الْكِتَابَ لَهُ وَرَّادٌ - إِنِّي سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ حِينَ سَلَّمَ . بِمِثْلِ حَدِيثِهِمَا . إِلاَّ قَوْلَهُ " وَهُوَ عَلَى كُلِّ شَىْءٍ قَدِيرٌ " . فَإِنَّهُ لَمْ يَذْكُرْ .
Warrad, the freed slave of Mughira b. Shu'ba, reported:Mughira b. Shu'ba wrote to Mu'awiya (it was Warrad who wrote this letter for him, i. e. Mughira): I heard the Messenger of Allah (ﷺ) saying:" When the salutation is pronounced." and the rest of the hadith is the same except this that he made no mention of:" He is Potent over everything
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 5:177