Do you not see that Allah makes the clouds move gently, then joins them together, then piles them up in masses, then you see the rain coming from inside them? He also sends down hail from the clouds that look like mountains in the sky, afflicting therewith whom He wills and turning it away from whom He pleases; the flash of His lightning almost takes away sight.
Meaning:-
Afflicting: deeply distressing ; painful, torture, illness, or disaster, to cause suffering, pain.