Sahih al-Bukhari 6247
صحيح البخاري#6247SahihNarrated Anas bin Malik:that he passed by a group of boys and greeted them and said, "The Prophet (ﷺ) used to do so
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: 79:21