সূরা ৬ : আয়াত ৩০

If you, O Messenger, could only see when those who denied the resurrection will be made to stand before their Lord, you would see a remarkable sight of their trouble when Allah will say to them: Is this resurrection that you used to deny not the truth about which there is no doubt? They will say: I swear by our Lord Who created us, it is certainly true and there is no doubt about it. Allah will then say to them: Taste the punishment that is a result of your denial of this day, which you used to reject in the life of the world.