Ramadan is the ninth month of the Islamic lunar calendar. Every day during this month, Muslims around the world spend the daylight hours in a complete fast.
During Ramadan, every part of the body must be restrained. The tongue must be restrained from backbiting and gossip. The eyes must restrain themselves from looking at unlawful things. The hand must not touch or take anything that does not belong to it. The ears must refrain from listening to idle talk or obscene words. The feet must refrain from going to sinful places. In such a way, every part of the body observes the fast.(source)