Sahih al-Bukhari 4802
صحيح البخاري#4802SahihNarrated Abu Dharr:Once I was with the Prophet (ﷺ) in the mosque at the time of sunset. The Prophet (ﷺ) said, "O Abu Dharr! Do you know where the sun sets?" I replied, "Allah and His Apostle know best." He said, "It goes and prostrates underneath (Allah's) Throne; and that is Allah's Statement:-- 'And the sun runs on its fixed course for a term (decreed). And that is the decree of All-Mighty, the All-Knowing
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: 65:324