English Translation of Al-Quran
 Surah Al-Baqarah [The Cow]
Ayat 187. It is made lawful for you to have sexual relations with your wives on the night of As-Saum (the fasts). They are Libas [i.e. body cover, or screen, or Sakan, (i.e. you enjoy the pleasure of living with her – as in Verse 7:189), for you and you are the same for them. Allah knows that you used to deceive yourselves, so He turned to you (accepted your repentance) and forgave you. So now have sexual relations with them and seek that which Allah has ordained for you (offspring), and eat and drink until the white thread (light) of dawn appears to you distinct from the black thread (darkness of night), then complete your Saum (fast) till the nightfall. And do not have sexual relations with them (your wives) while you are in Itikaf (i.e. confining oneself in a mosque for prayers and invocations leaving the worldly activities) in the mosques. These are the limits (set) by Allah, so approach them not. Thus does Allah make clear His Ayat (proofs, evidence, lessons, signs, revelations, verses, laws, legal and illegal things, Allah’s set limits, orders, etc.) to mankind that they may become Al-Muttaqun (the pious).
Tafseer of Surah Al-Baqarah Ayat 187. Permitted to you, on the night of the fasts, is the approach to your wives. They are your garments and ye are their garments. Allah knoweth what ye used to do secretly among yourselves; but He turned to you and forgave you; so now associate with them, and seek what Allah Hath ordained for you, and eat and drink, until the white thread of dawn appear to you distinct from its black thread; then complete your fast Till the night appears; but do not associate with your wives while ye are in retreat in the mosques. Those are Limits (set by) Allah. Approach not nigh thereto. Thus, doth Allah make clear His Signs to men: that they may learn self-restraint. Men and women are each other’s garments: i.e., they are for mutual support, mutual comfort, and mutual protection, fitting into each other as a garment fits the body. A garment also is both for show and concealment. The question of sex is always delicate to handle here. We are told that even in such matters a clear, open, and honest course is better than fraud or self-deception. The sex instinct is classed with eating and drinking, an animal thing to be restrained, but not to be ashamed of. The three things are prohibited during the fast by day, but permitted after the fast is broken at night till the next fast commences.. There is a difference of opinion as to the exact meaning of this. I would connect this as a parallel clause with the clause “eat and drink”, which follows, all three being governed by “until the white thread”, etc. That is, all three things must stop when the fast begins again in the early morning. Or it may mean: What is permitted is well enough, but seek the higher things ordained for you. Those in touch with Nature know the beautiful effects of early dawn. First appear thin white indefinable streaks of light in the east; then a dark zone supervenes; followed by a beautiful pinkish white zone clearly defined from the dark; after that the fast begins. Till the night appears: From the actual practice of the Holy Prophet, this is rightly interpreted to mean: “Till sunset”. This verse refers to the known Islamic practice called Itikaf which means retreating to mosques for devotion and worship. The Prophet (peace be on him) used to retreat to the mosque during the last ten days of Ramadan. I construe these limits as applying to the whole of the regulations about fasts.
English Translation of Hadith
Hazrat Talha bin Ubaidullah (May Allah be pleased with him) reported: At the sight of the new moon (of the lunar month), the Messenger of Allah [SAWW](PBUH) used to supplicate: “Allahumma ahillahu `alaina bil-amni wal-iman, was-salamati wal-Islam, Rabbi wa Rabbuk-Allah, Hilalu rushdin wa khairin (O Allah, let this moon appear on us with security and Iman; with safety and Islam. (O moon!) Your Rubb and mine is Allah. May this moon be bringing guidance and good).”
[At-Tirmidhi Hadith # 3451].
Lesson : After sighting the moon, one should recite the prayer which was recited by the Prophet [SAWW](PBUH). The prayer cited in the text of this Hadith is one of them.