The Family Of Imran - 3:190
In the creation of the heavens and the earth, and in the alternation of the night and the day, there are signs for those who have understanding.
Why was the night created?
Prophet Jonah/10:67
He has made the night favorable for you to rest and the day light. In this are proofs for a people who listen.
The Criterion/25:47
And He it is Who has made the night a covering for you, and sleep a rest, and the day a time of resurrection.
The Cattle/6:96
He is the One who brings forth the morning. He has made the night a time of rest and the sun and the moon a means of calculation. This is the plan of the All-Supreme and All-Knowing.
The Forgiver/40:61
It is Allah Who created the night for you to rest and made the day bright. Allah is gracious to the people, but most of the people do not give thanks.
The Ants/27:86
Have they not seen that We have made the night favorable for their rest and the day bright? Surely there are signs in this for a people who believe.
The News/78:9
We made your sleep a rest.
The News/78:10
We made the night a cover.
The Stories/28:72
"Say, "What would you say if Allah made the day continuous upon you until the Day of Resurrection? Which God besides Allah can bring you the night of rest? Do you not see?"
The Stories/28:73
It is of His Mercy that He arranged the night and the day, that you may rest in the one and seek His Blessings in the other. Perhaps you will be grateful.