In the name of Allah, Most Gracious, Most Merciful.
183. O you who have believed, decreed upon you is fasting as it was decreed upon those before you that you may become righteous –
184. [Fasting for] a limited number of days. So whoever among you is ill or on a journey [during them] – then an equal number of days [are to be made up]. And upon those who are able [to fast, but with hardship] – a ransom [as substitute] of feeding a poor person [each day]. And whoever volunteers good [i.e., excess] – it is better for him. But to fast is best for you, if you only knew.
185. The month of Ramadan [is that] in which was revealed the Quran, a guidance for the people and clear proofs of guidance and criterion. So whoever sights [the new moon of] the month, let him fast it; and whoever is ill or on a journey – then an equal number of other days. Allah intends for you ease and does not intend for you hardship and [wants] for you to complete the period and to glorify Allah for that [to] which He has guided you; and perhaps you will be grateful.
186. And when My servants ask you, [O Muhammad], concerning Me – indeed I am near. I respond to the invocation of the supplicant when he calls upon Me. So let them respond to Me [by obedience] and believe in Me that they may be [rightly] guided.
187. It has been made permissible for you the night preceding fasting to go to your wives [for sexual relations]. They are clothing for you and you are clothing for them. Allah knows that you used to deceive yourselves, so He accepted your repentance and forgave you. So now, have relations with them and seek that which Allah has decreed for you [i.e., offspring]. And eat and drink until the white thread of dawn becomes distinct to you from the black thread [of night]. Then complete the fast until the night [i.e., sunset]. And do not have relations with them as long as you are staying for worship in the mosques. These are the limits [set by] Allah, so do not approach them. Thus does Allah make clear His verses [i.e., ordinances] to the people that they may become righteous.
Sura 2. Al-Baqarah (The Cow)
 Also, “whoever is present during the month.”
 Prior to this revelation, marital relations were unlawful during nights preceding fasting. Some were unable to refrain and secretly disobeyed, but they did not deceive Allah.