Ramadan honors the night in 610 A.D. when the Koran descended into the soul of the Prophet Muhammad. The last ten days of Ramadan are particularly holy as they include Laylat al-Qadr, night of power, which is the night when the Angel Gabriel first spoke to Muhammad and revealed the Koran (Glasse 276). Muslims celebrate this occasion with fasting, which is an important part of their religion as it is one of the five pillars or key practices of Islam.