Sahih al-Bukhari 460
صحيح البخاري#460SahihNarrated Abu Rafi: Abu Huraira said, "A man or a woman used to clean the mosque." (A sub-narrator said, 'Most probably a woman..') Then he narrated the Hadith of the Prophet
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 8:108