Ibn Qayyim Al-Jawziyya
In December 2003, the Fiqh Academy of the Muslim World League forbade tawarruq "as practiced by Islamic banks today". In 2009 another prominent juristic council, the Fiqh Academy of the OIC, ruled that "organized Tawarruq" is impermissible. Noted clerics who have ruled against it include Ibn Qayyim Al-Jawziyya and Ibn Taymiyya. On the other hand, Faleel Jamaldeen notes that Islamic banks using "Tawarruq" as of 2012 include the United Arab Bank, QNB Al Islamic, Standard Chartered of United Arab Emirates, and Bank Muamalat Malaysia.