Sahih Muslim 7220
صحيح مسلم#7220SahihAl-Bara' b. 'Azib reported that this verse:"Allah keeps those who believe steadfast with firm word in this world and the Hereafter" was revealed in connection with the torment of the grave
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: 53:89