Sahih Muslim 870
صحيح مسلم#870SahihAbu Salama b. 'Abd al-Rahman reported.. When Marwan appointed Abu Huraira as his deputy in Medina, he recited takbir whenever he got up for obligatory prayer, and the rest of the hadith is the same as transmitted by Ibn Juraij (but with the addition of these words):On completing the prayer with salutation, and he turned to the people in the mosque and said
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: 4:33