Abdul-Qadir Gilani
The Qadiri Order is one of the oldest Sufi orders. It derives its name from Abdul-Qadir Gilani (1077–1166), a native of the Iranian province of Gīlān. The order is one of the most widespread of the Sufi orders in the Islamic world, and has a huge presence in Central Asia, Pakistan, Turkey, Balkans and much of East and West Africa. The Qadiriyyah have not developed any distinctive doctrines or teachings outside of mainstream Islam. They believe in the fundamental principles of Islam, but interpreted through mystical experience.