Sahih Muslim 836
صحيح مسلم#836SahihAnas reported:(The people) stood up for the night prayer when a man spoke forth: I need to say something. The Apostle of Allah (ﷺ) entered into secret conversation with him, till the people dozed off or some of the people (dozed off), and then they said the prayer
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: 3:157