Sahih al-Bukhari 4767
صحيح البخاري#4767SahihNarrated `Abdullah:Five (great events) have passed: the Smoke, the Moon, the Romans, the Mighty grasp and the constant Punishment which occurs in 'So the torment will be yours forever
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: 65:289