Sahih Muslim 836
صحيح مسلم#836Sahihحَدَّثَنِي أَحْمَدُ بْنُ سَعِيدِ بْنِ صَخْرٍ الدَّارِمِيُّ، حَدَّثَنَا حَبَّانُ، حَدَّثَنَا حَمَّادٌ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، أَنَّهُ قَالَ أُقِيمَتْ صَلاَةُ الْعِشَاءِ فَقَالَ رَجُلٌ لِي حَاجَةٌ . فَقَامَ النَّبِيُّ صلى الله عليه وسلم يُنَاجِيهِ حَتَّى نَامَ الْقَوْمُ - أَوْ بَعْضُ الْقَوْمِ - ثُمَّ صَلَّوْا .
Anas 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
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: 3:157