Sahih al-Bukhari 503
صحيح البخاري#503SahihNarrated Anas:I saw the most famous people amongst the companions of the Prophet (ﷺ) hurrying towards the pillars at the Maghrib prayer before the Prophet (ﷺ) came for the prayer
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: 8:150