Ubayy 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

English translation · Sahih Muslim