This is a day of remembrance for Muslims, marked by prayers and reading of the holy Quran. It falls on the 12th day of the Rabi ul Awwal, the third month of the Islamic lunar calendar. It marks both the birth and the death of the prophet (or nabi) of Islam, Muhammad, and the beginning of the rule of the Caliphs. Prior to his death, the prophet had delivered his last sermon where he spoke of certain essential rules of Islam. In the land of his birth, this day assumes a greater significance since the law here is based on Islamic precepts.