Sahih al-Bukhari 431
صحيح البخاري#431SahihNarrated `Abdullah bin `Abbas:The sun eclipsed and Allah's Messenger (ﷺ) offered the eclipse prayer and said, "I have been shown the Hellfire (now) and I never saw a worse and horrible sight than the sight I have seen today
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: 8:81