Sahih al-bukhari:4693 What has been said about Fãtihat al-Kitab (i.e., the Opening of the Book) Book 65, Hadith 215

Narrated `Abdullah (bin Mas`ud): When the Prophet (ﷺ) realized that the Quraish had delayed in embracing Islam, he said, “O Allah!
Protect me against their evil by afflicting them with seven (years of famine) like the seven years of
(Prophet) Joseph.” So they were struck with a year of famine that destroyed everything till they had to
eat bones, and till a man would look towards the sky and see something like smoke between him and
it. Allah said:–
“Then watch you (O Muhammad) for the day when the sky will produce a kind of smoke plainly
visible.” (44.10) And Allah further said:– “Verily! We shall withdraw the punishment a little, Verily
you will return (to disbelief).” (44.15) (Will Allah relieve them from torture on the Day of
Resurrection?) (The punishment of) the smoke had passed and Al-Baltsha (the destruction of the
pagans in the Badr battle) had passed too.