Sahih al-Bukhari 4382

It is related from Masruq that 'Abdullah said, "Allah sent Muhammad, may Allah bless him and grant him peace, and said, 'Say: "I do not ask you for any wage for it, nor am I a mand of false pretensions."' (38:86) When the Messenger of Allah, may Allah bless him and grant him peace, saw that Quraysh refused to obey him, he said, 'O Allah, help me against them with seven years like the years of Yusuf.' They were afflicted by a year of drought which destroyed everything, so that they ate bones and skins. (One of them said, 'Until they ate skins and carrion.') Something resembling smoke began to come out of the earth. Abu Sufyan went to him and said, 'O Muhammad, your people are destroyed. Pray to Allah to remove that from them.' He prayed and then he said, 'You will revert after this.'" In the hadith of Mansur, then he recited, "So be on the watch for a day when heaven brings forth a distinctive smoke ...to ...and you revert." (44:10-15) and said, "Will the punishment of the Next World be removed? The Smoke, the Blow, and the Punishment have already occurred." One of them said, "the moon" and another said, "the Romans." CCCXIV: "'On the day We launch the Great Assault We will certainly have Our revenge." (44:16)