Sahih Muslim 1726
صحيح مسلم#1726Sahihوَحَدَّثَنَا عَمْرٌو النَّاقِدُ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي لَبِيدٍ، سَمِعَ أَبَا سَلَمَةَ، قَالَ أَتَيْتُ عَائِشَةَ فَقُلْتُ أَىْ أُمَّهْ أَخْبِرِينِي عَنْ صَلاَةِ رَسُولِ اللَّهِ صلى الله عليه وسلم . فَقَالَتْ كَانَتْ صَلاَتُهُ فِي شَهْرِ رَمَضَانَ وَغَيْرِهِ ثَلاَثَ عَشْرَةَ رَكْعَةً بِاللَّيْلِ مِنْهَا رَكْعَتَا الْفَجْرِ .
Abu Salama is reported to have said. I came to 'A'isha. I said:O mother, inform me about the prayer of the Messenger of Allah (ﷺ). She said: His (night prayer) in Ramadan and (during other months) was thirteen rak'ahs at night including two rak'ahs of fajr
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: 6:155