Sahih Muslim 7070
صحيح مسلم#7070SahihUbayy b. Ka'b reported that the words of Allah, the Exalted and Glorious:" We will, surely, make them taste the lesser punishment before the severer punishment (that haply they may return)" (xxxii. 21) imply the torments of the world. (victory of) Rome, seizing (of the Meccans), or smoke. And Shalba was in doubt about seizing or smoke
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: 52:26