Sahih al-Bukhari 6354
صحيح البخاري#6354SahihNarrated Mahmud bin Ar-Rabi:On whose face Allah's Messenger (ﷺ) had thrown water from his mouth, the water having been taken from their well while he was still a young boy (who has not yet attained the age of puberty)
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: 80:51