Sahih Muslim 2004
صحيح مسلم#2004SahihJabir b. Samura reported:I used to observe prayer with the Messenger of Allah (ﷺ) and his prayer was of moderate length and his sermon too was of moderate length
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: 7:54