- In Islamic Law and Society in Indonesia: Corporate Zakat Norms and Practices in Islamic Banks (Routledge, 2022), Alfitri (Faculty of Sharia and Law, the Sultan Aji Muhammad Idris State Islamic University of Samarinda) “presents original case studies based on sociolegal field research on the reception of the new obligations in the Islamic banks that choose to pay – and choose not to pay – what is effectively a new tax.”