Sahih Muslim 4310
صحيح مسلم#4310Sahihوَحَدَّثَنِيهِ بِشْرُ بْنُ خَالِدٍ، أَخْبَرَنَا مُحَمَّدٌ، - يَعْنِي ابْنَ جَعْفَرٍ - عَنْ شُعْبَةَ، بِهَذَا الإِسْنَادِ وَلَمْ يَذْكُرْ قَوْلَهُ أَعُوذُ بِاللَّهِ أَعُوذُ بِرَسُولِ اللَّهِ صلى الله عليه وسلم .
This hadith has been narrated on the authority of Shu'ba with the same chain of transmitters, but made no mention of (these words) of his:I seek refuge with Allah, I seek refuge with Allah's Messenger (ﷺ)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 27:57