Sahih al-Bukhari 1257
صحيح البخاري#1257Sahihحَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ حَمَّادٍ، أَخْبَرَنَا ابْنُ عَوْنٍ، عَنْ مُحَمَّدٍ، عَنْ أُمِّ عَطِيَّةَ، قَالَتْ تُوُفِّيَتْ بِنْتُ النَّبِيِّ صلى الله عليه وسلم فَقَالَ لَنَا " اغْسِلْنَهَا ثَلاَثًا أَوْ خَمْسًا أَوْ أَكْثَرَ مِنْ ذَلِكَ إِنْ رَأَيْتُنَّ، فَإِذَا فَرَغْتُنَّ فَآذِنَّنِي ". فَلَمَّا فَرَغْنَا آذَنَّاهُ فَنَزَعَ مِنْ حِقْوِهِ إِزَارَهُ وَقَالَ " أَشْعِرْنَهَا إِيَّاهُ ".
Narrated Um 'Atiyya:The daughter of the Prophet (ﷺ) expired, and he said to us, "Wash her three or five times, or more if you see it necessary, and when you finish, notify me." So, (when we finished) we informed him and he unfastened his waist-sheet and told us to shroud her in it
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: 23:19