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Eid Al Fitr-Three days of celebration marking the end of the month of Ramadan and fasting.
Iftar-The evening repast which occurs at Maghrib to break ones fast. This usually consists of dates and milk, but varies from family to family. A larger meal is served after the Maghrib prayer.
Sahor-The meal prior to when one begins the day's fasting. All eating and drinking should end 10 minutes before the Fajr prayer is said.
Saum-Fasting
Taraweeh-The special daily prayers and recitation which are said in the mosque in a group. The recitation begins and ends with successive verses of quran, so by the end of the month the entire quran has been recited.
Zakat-The required contribution given to the poor at ramadan.

Quran 2:183 O ye who believe!  Fasting is prescribed to you as it was prescribed to those before you, that you may (learn) self-restraint.