The Cow - 2:187
It has been made lawful for you to have sexual intercourse with your women on the nights of fasting. They are your coverings and you are their coverings. Allah knew that you were deceiving yourselves, so He accepted your repentance and forgave you. Now you may have sexual intercourse with them as Allah has determined for you. Eat and drink until you can distinguish between the white and black threads of dawn. Then complete the fast until the night. Do not have sexual intercourse with them while they are confined in the mosques. These are the limits set by Allah; do not transgress them. This is how Allah reveals His verses to the people for their protection.
Night:
The Cattle/6:76
"When night fell upon him, he saw a planet and said, "This is my Lord!"When it sank, he said, "I do not love the sinking."
The Thunder/13:10
Whether you conceal the Word or reveal it, whether you hide it in the darkness of the night or come out in the daytime, it is one for Him.
The Night Journey/17:78
Observe the prayer from the setting of the sun until the darkness of the night. Observe the Qur´an in the morning. In the morning the Qur´an (recitation) is witnessed.
The Arabic Letter Sad/38:31
One evening, beautiful horses were presented to him.
The Arabic Letter Sad/38:32
"He said, "The love of wealth and property has kept me from the remembrance of my Lord. Until it (the sun) disappeared behind a veil."