literature discussing/prescribing traditional social/legal customs/practices of the Islamic community, often based on the record of teachings, deeds and sayings of Muhammad
The word Sunnah (Arabic: سنة) is an Arabic word meaning "tradition" or "way." For Muslims, Sunnah means "the way of the prophet". Sunnites try to follow his words, actions and teachings.
Muslim scholars learn about the Sunnah by studying thousands of stories about Muhammad, his family, and his first followers. These stories are called Hadith.