Sahih al-Bukhari 3874
صحيح البخاري#3874SahihNarrated Um Khalid bint Khalid:When I came from Ethiopia (to Medina), I was a young girl. Allah's Messenger (ﷺ) made me wear a sheet having marks on it. Allah's Messenger (ﷺ) was rubbing those marks with his hands saying, "Sanah! Sanah!" (i.e. good, good)
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: 63:99