Sahih al-Bukhari 4813
صحيح البخاري#4813SahihNarrated Abu Huraira:The Prophet (ﷺ) said, "I will be the first to raise my head after the second blowing of the trumpet and will see Moses hanging on the Throne, and I will not know whether he had been in that state all the time or after the blowing of the trumpet
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: 65:335