Wahhabism (Arabic: وهابية‎) is an ultra-conservative branch of Sunni Islam. It is a form of Salafism, and a religious movement within Sunni Islam Wahhabism was developed by an eighteenth century Muslim theologian, Muhammad ibn Abd al-Wahhab (1703–1792) from Najd, Saudi Arabia. Ibn Abd Al-Wahhab advocated purging Islam of what he considered to be impurities and innovations. His has become the dominant form of Islam in Saudi Arabia. Its adherents prefer to be referred to as Salafis.

The movement claims to adhere to the correct understanding of the general Islamic doctrine of Tawhid, on the "uniqueness" and "unity" of God, shared by the majority of Islamic sects, but uniquely interpreted by Ibn Abd Al-Wahhab. Ibn Abd-al-Wahhab was influenced by the writings of Ibn Taymiyya and questioned classical interpretations of Islam, claiming to rely on the Qur'an and the Hadith. He attacked a "perceived moral decline and political weakness" in the Arabian Peninsula and condemned what he perceived as idolatry, the popular cult of saints, and shrine and tomb visitation.

Imam Muhammad al-Asi (Arabic: محمّد العاصي) is the Muslim imam (leader) who formerly led prayer at the Islamic Center of Washington, and currently spends most of his time teaching and working on the first Quranic exegesis to be written originally in English. Al-Asi was elected as the Imam of the masjid in 1981. In March 1983, al-Asi was expelled from the center for preaching views that were deemed antithetical to the Saudi establishment. Although he still identifies himself as Imam of the Islamic Center, the Center has stated that it has no affiliation with him. He still holds Jumu'ah khutbahs every Friday on the sidewalk in front of the Islamic Center.

Muhammad al-Asi was born in Grand Rapids, MI in 1951. At the age of 11 he moved to Lebanon. There, he completed high school and attended the Arab University of Beirut, where he intensively studied the Arabic language. In 1973, al-Asi returned to the U.S. and attended the University of Maryland, graduating with a degree in Government and Politics in 1979.