Sahih al-Bukhari 594
صحيح البخاري#594SahihNarrated Ibn Abu Malih [??]:I was with Buraida on a cloudy day and he said, "Offer the `Asr prayer earlier as the Prophet (ﷺ) said, 'Whoever leaves the `Asr prayer will have all his (good) deeds annulled." (See Hadith No. 527 and)
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: 9:69