Sahih Muslim 6940
صحيح مسلم#6940SahihIbn 'Abbas reported that Allah's Messenger (ﷺ) stated like this:He looked into the Fire of Hell. The rest of the hadith is the same
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 49:4