Quran 26:188 — The Poets (Al-Shu`ara')

He said, "My Lord is the One who knows everything you do."

[26:187] "Let masses from the sky fall on us, if you are truthful."

[26:189] They disbelieved him and, consequently, they incurred the retribution of the Day of the Canopy. It was the retribution of an awesome day.