Sahih al-Bukhari 167
صحيح البخاري#167SahihNarrated Um-`Atiya:That the Prophet (ﷺ) at the time of washing his deceased daughter had said to them, "Start from the right side beginning with those parts which are washed in ablution
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: 4:33