Nay, they deny the hour (the Day of Resurrection), and for those who deny the hour, We have prepared a flaming Fire (i.e. Hell).

And on the Day that the hour will be established, the Mujrimun (criminals, disbelievers, polytheists, sinners, etc.) will swear that they stayed not but an hour, thus were they ever deluded [away from the truth (i.e. they used to tell lies and take false oaths, and turn away from the truth) in this life of the world].

See you not (O Muhammad ﷺ) that Allah merges the night into the day (i.e. the decrease in the hours of the night are added in the hours of the day), and merges the day into the night (i.e. the decrease in the hours of day are added in the hours of night), and has subjected the sun and the moon, each running its course for a term appointed; and that Allah is All-Aware of what you do.

People ask you concerning the hour, say: "The knowledge of it is with Allah only. What do you know? It may be that the hour is near!"

He merges the night into the day (i.e. the decrease in the hours of the night are added to the hours of the day), and He merges the day into the night (i.e. the decrease in the hours of the day are added to the hours of the night). And He has subjected the sun and the moon, each runs its course for a term appointed. Such is Allah your Lord; His is the kingdom. And those, whom you invoke or call upon instead of Him, own not even a Qitmir (the thin membrane over the datestone).

And when it was said: "Verily! Allah's Promise is the truth, and there is no doubt about the coming of the hour," you said; "We know not what is the hour, we do not think it but as a conjecture, and we have no firm convincing belief (therein)."

Nay, but the hour is their appointed time (for their full recompense), and the hour will be more grievous and more bitter.

He merges night into day (i.e. the decrease in the hours of the night is added into the hours of the day), and merges day into night (i.e. the decrease in the hours of the day is added into the hours of the night), and He has full knowledge of whatsoever is in the breasts.

(They are) those who are patient ones, those who are true (in Faith, words, and deeds), and obedient with sincere devotion in worship to Allah. Those who spend [give the Zakat and alms in the Way of Allah] and those who pray and beg Allah's Pardon in the last hours of the night.

You make the night to enter into the day, and You make the day to enter into the night (i.e. increase and decrease in the hours of the night and the day during winter and summer), You bring the living out of the dead, and You bring the dead out of the living. And You give wealth and sustenance to whom You will, without limit (measure or account).