Surah Al-Qamar
**The Hour (of doom) has drawn near, and the moon has been split asunder. [1] And when these people see a sign, they turn away and say, “(This is) a transient magic.” [2] And they have rejected (the Truth) and followed their desires, while every matter has to be settled (at some time). [3] And there has come to them as much news (of the earlier communities) as contains enough to warn, [4] a perfect wisdom, but the warnings are of no avail (to them). [5] Therefore, turn aside (O Prophet,) from them. (They will see the reality) on the Day when the caller will call to a terrible thing. [6] With their eyes humbled, they will come out of the graves like locusts spread all over, [7] rushing quickly towards the caller. (On that Day) the disbelievers will say, “This is a **difficult day.” [8]…
http://www.classicalislamgroup.co.uk/index.php?view=tafseer/s54-v1to8
http://www.classicalislamgroup.co.uk/index.php?view=Tafseer-Al-Qamar
also evidence in Bukhari and Muslim