Qadiriyya

The Qadiriyya (Arabic: القادريه‎‎, Persian: قادریه‎‎, also transliterated Qadri, Qadriya, Kadri, Elkadri, Elkadry, Aladray, Alkadrie, Adray, Kadray, Qadiri,"Quadri" or Qadri), are members of the Qadiri tariqa (Sufi order). This derives its name from Abdul-Qadir Gilani (1077–1166, also transliterated Jilani) who was from Gilan. The order relies strongly upon adherence to the fundamentals of Islam.

The order, with its many offshoots, is widespread, particularly in the Arabic-speaking world, and can also be found in Turkey, Indonesia, Afghanistan, India, Bangladesh, Pakistan, the Balkans, Russia, Palestine, Israel, China,East and West Africa.

The founder of the Qadiriyya, Abdul-Qadir Gilani, was a respected scholar and preacher. Having been a pupil at the madrasa of Abu Sa'id al-Mubarak he became leader of this school after his death in 1119. Being the new sheikh, he and his large family lived comfortably in the madrasa until his death in 1166, when his son, Abdul Razzaq, succeeded his father as sheikh. Gilani's son, Abdul-Razzaq Gilani, published a hagiography of his father, emphasizing his reputation as founder of a distinct and prestigious Sufi order.

...
Wikipedia