The Fourth Pillar of Islam is Sawm, or fasting. Fasting takes place during the daylight hours in Ramadan, which is the holy month in the Islamic calendar. Using a lunar calendar means the month of Ramadan shifts 11 days earlier each year. Sawm is directly mentioned in the Quran: “eat and drink until the whiteness of the day becomes distinct from the blackness of the night at dawn, then complete the fast till night…”. The fast occurs from dawn to sunset each day, during which time believers are expected to prohibit themselves from any food, drink, sexual intercourse, or smoking. However after sunset and before dawn, individuals can participate in any of the actions previously stated as they desire.

The reason for fasting during Ramadan is to remind Muslims that all individuals are similarly needy upon the assistance of God and that there are less lucky individuals who need their assistance. Ramadan is a period of reflection when Muslims are called upon to recharge their faith, increment their charity, and make apology. In the Quran, the month of Ramadan was first revealed to Prophet Muhammad peace been upon him. Ramadan fasting ends with the “Id-ul-Fitr” (Festival of the Breaking of the Fast), which lasts for three days; of the first day of this festival, there is a meeting at the mosque for prayer celebration and each family head gives money for alms. Ritual fasting is an obligatory act during the month of Ramadan. Muslims must abstain from food and drink from dawn to dusk during this month, and are to be especially mindful of other sins. Fasting is necessary for every Muslim that has reached puberty (unless he/she suffers from a medical condition which prevents him/her from doing so).