They ask you about the hour, when will be its taking place? Say: The knowledge of it is only with my Lord; none but He shall manifest it at its time; it will be momentous in the heavens and the earth; it will not come on you but of a sudden. They ask you as if you were solicitous about it. Say: Its knowledge is only with Allah, but most people do not know.

And they ask you to hasten on the chastisement; and had not a term been appointed, the chastisement would certainly have come to them; and most certainly it will come to them all of a sudden while they will not perceive.