Quran 7:186 — The Purgatory (Al-A'araf)

Whomever GOD commits to straying, there is no way for anyone to guide him. He leaves them in their sins, blundering.

[7:185] Have they not looked at the dominion of the heavens and the earth, and all the things GOD has created? Does it ever occur to them that the end of their life may be near? Which Hadith, beside this, do they believe in?

[7:187] They ask you about the end of the world (the Hour),* and when it will come to pass. Say, "The knowledge thereof is with my Lord. Only He reveals its time.* Heavy it is, in the heavens and the earth. It will not come to you except suddenly."** They ask you as if you are in control thereof. Say, "The knowledge thereof is with GOD," but most people do not know.