Sahih al-Bukhari 5620
صحيح البخاري#5620SahihNarrated Sahl bin Sa`d:Allah's Messenger (ﷺ) was offered something to drink. He drank of it while on his right was a boy and on his left were some elderly people. He said to the boy, "May I give these (elderly) people first?" The boy said, "By Allah, O Allah's Messenger (ﷺ)! I will not give up my share from you to somebody else." On that Allah's Messenger (ﷺ) placed the cup in the hand of that boy
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: 74:46