Four Tariqa's are : Chishti - Qadri - Naqshbandi - Suhrawardi It is said that both Chishti & Suhrawardi are in principle Qadri tariqas as Suhrawardi was Shaykh Abdul Qadir Jilani's student and Moin al-Din Chishti took from Suhrawardi. How true is this claim ? Does Shaykh Abu Yusuf Riyad al-Haqq teach any Sufi books ?