Tijaniyya — Niass Faydiyya (Baye Niasse lineage)

The Tijaniyya — founded by Sheikh Ahmad al-Tijani (1737–1815) — is one of the largest Sufi tariqas globally, with the Niass Faydiyya branch headquartered in Medina-Baye, Kaolack, Senegal, the dominant West African expression. Sheikh Ibrahim Niass ('Baye Niasse', 1900–1975) is credited with the Faydah ('flood') of mass tarbiyya (Sufi training) that produced an estimated 50 million muqaddam-affiliated adherents across Senegal, Nigeria (especially Kano under Sheikh Tijani Usman), Niger, Mauritania, Sudan and the African diaspora. The Niass institution operates Medina-Baye's mosque-school complex and substantial real-estate holdings; leadership has been continuous through descendants of Baye Niasse. Mainstream Tijaniyya practice is low-control voluntary, but specific successor courts and breakaway muqaddam circles have produced documented higher-control patterns — strict obedience to a particular sheikh, financial extraction, and severance of critics — without rising to the level of the mainstream tariqa as a whole. CLCI rating reflects the mainstream Niass institution; specific high-control sub-circles would warrant separate entries when documented.