The Bee - 16:77 To Allah belong the mysteries of the heavens and the earth. The Hour (the end of the world) is as the blink of an eye or shorter. Allah is the All-Sufficient.
The hour (the end of the world) is as short as the blink of an eye:
The Moon/54:50 Our command is as sudden as the blink of an eye.

The Ways of Ascent/70:8 The day will come when the sky will be like molten metal.
The Ways of Ascent/70:9 The mountains will be like discarded wool.

The Bee/16:77 To Allah belong the mysteries of the heavens and the earth. The Hour (the end of the world) is as the blink of an eye or shorter. Allah is the All-Sufficient.

The Coalition/33:63 "The people ask you about the Hour (the last hour of the world). Say, "The knowledge of it is with Allah; how do you know, perhaps the Hour is near."

The Night Journey/17:51 "Or assume a form that seems impossible to you, it does not matter."They will say: "Who will bring us back?"Say: "Whoever created you in the first place!"Then they will shake their heads and say, "And when?"Say: "Perhaps nearer than you think..."

Council/42:17 It is Allah Who has sent down the Book with truth and justice. What do you know, perhaps the Hour (the end of the world) is near.

The News/78:40 "We have warned you of an imminent torment. On that Day a person will look at what he has done, and the disbeliever will say: "Would that he were dust!"