Sahih al-Bukhari 1929
صحيح البخاري#1929Sahihحَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ هِشَامِ بْنِ أَبِي عَبْدِ اللَّهِ، حَدَّثَنَا يَحْيَى بْنُ أَبِي كَثِيرٍ، عَنْ أَبِي سَلَمَةَ، عَنْ زَيْنَبَ ابْنَةِ أُمِّ سَلَمَةَ، عَنْ أُمِّهَا ـ رضى الله عنهما ـ قَالَتْ بَيْنَمَا أَنَا مَعَ، رَسُولِ اللَّهِ صلى الله عليه وسلم فِي الْخَمِيلَةِ إِذْ حِضْتُ فَانْسَلَلْتُ، فَأَخَذْتُ ثِيَابَ حِيضَتِي فَقَالَ " مَا لَكِ أَنُفِسْتِ ". قُلْتُ نَعَمْ. فَدَخَلْتُ مَعَهُ فِي الْخَمِيلَةِ، وَكَانَتْ هِيَ وَرَسُولُ اللَّهِ صلى الله عليه وسلم يَغْتَسِلاَنِ مِنْ إِنَاءٍ وَاحِدٍ، وَكَانَ يُقَبِّلُهَا وَهُوَ صَائِمٌ.
Narrated Zainab:(daughter of Um Salama) that her mother said, "While I was (lying) with Allah's Messenger (ﷺ) underneath a woolen sheet, I got the menstruation, and then slipped away and put on the clothes (which I used to wear) in menses. He asked, "What is the matter? Did you get your menses?" I replied in the affirmative and then entered underneath that woolen sheet. I and Allah's Messenger (ﷺ) used to take a bath from one water pot and he used to kiss me while he was fasting
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 al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 30:37