O you who believe! Observing As-Saum (the fasting) is prescribed for you as it was prescribed for those before you, that you may become Al-Muttaqun (the pious – See V.2: 2).

(Al-Baqara, Chapter #2, Verse #183)

O you who believe! Kill not the game while you are in a state of Ihram [for Hajj or ‘Umrah (pilgrimage)], and whosoever of you kills it intentionally, the penalty is an offering, brought to the Ka’bah, of an eatable animal (i.e. sheep, goat, cow) equivalent to the one he killed, as adjudged by two just men among you; or, for expiation, he should feed Masakin (poor persons), or its equivalent in Saum (fasting), that he may taste the heaviness (punishment) of his deed. Allah has forgiven what is past, but whosoever commits it again, Allah will take retribution from him. And Allah is All-Mighty, All-Able of Retribution.

(Al-Maeda, Chapter #5, Verse #95)

It may be if he divorced you (all) that his Lord will give him instead of you, wives better than you – Muslims (who submit to Allah), believers, obedient (to Allah), turning to Allah in repentance, worshipping Allah sincerely, given to fasting or emigrants (for Allah’s sake), previously married and virgins.

(At-Tahrim, Chapter #66, Verse #5)

Verily, your Lord knows that you do stand (to pray at night) a little less than two thirds of the night, or half the night, or a third of the night, and also a party of those with you. And Allah measures the night and the day. He knows that you are unable to pray the whole night, so He has turned to you (in mercy). So, recite you of the Qur’an as much as may be easy for you. He knows that there will be some among you sick, others travelling through the land, seeking of Allah’s Bounty, yet others fighting in Allah’s Cause. So recite as much of the Qur’an as may be easy (for you), and perform As-Salat (Iqamat-as-Salat ) and give Zakat, and lend to Allah a goodly loan. And whatever good you send before you for yourselves (i.e. Nawafil non-obligatory acts of worship: prayers, charity, fasting, Hajj and ‘Umrah), you will certainly find it with Allah, better and greater in reward. And seek Forgiveness of Allah. Verily, Allah is Oft-Forgiving, Most-Merciful .

(Al-Muzzammil, Chapter #73, Verse #20)

The Day when all the secrets (deeds, prayers, fasting, etc.) will be examined (as to their truth).

(At-Tariq, Chapter #86, Verse #9)