The Book of Fasting
The month of Ramadan is one of the 12 months of the Islamic calendar. Allah Almighty says, “The number of months in the sight of Allah is twelve (in a year)—so ordained by Him the day He created the heavens and the earth” (At-Tauba 9:36)
Allah distinguished Ramadan from the rest of the months by revealing the Qura`n in it, prescribing its fast for Muslims, and bestowing it with certain virtues that are absent in the other months.
Consequently, Ramadan is a month when a person is to hasten to do good deeds, attain the best of rewards, and make up missed actions and duties. Allah Almighty says, “Ramadan is the (month) in which was sent down the Qur`an, as a guide to mankind, also clear (Signs) for guidance and judgment (between right and wrong). So everyone of you who is present (at his home) during that month should spend it in fasting.” ([Al-Baqarah 2: 185)
Source: Dar al-Ifta al MisriyyahSoucre Link