“…In the past decade, research methodologies on the socio-economic developmental role of waqf in OIC countries have been empirical and conceptual (Table 2). Of the 68 relevant papers, most research studies used qualitative methods of empirical research (72%), with in-depth interviews to study waqf institutions or a community that received waqf benefits (Amuda and Embi, 2013;Fatira and Nasution, 2019;Iman and Mohammad, 2017;Kayadibi et al, 2017;Razak et al, 2016;Suhaimi et al, 2014), while 8% used a survey method (Amuda et al, 2016;Hassana et al, 2020;Kresnowati and Berakon, 2017). On the other hand, 20% used a conceptual methodology to propose a new model for waqf development in OIC countries and to increase the productivity of this Islamic endowment and its role for the ummah (Ali et al, 2019;Baharuddin and Taufiq, 2016;Haneef et al, 2013;Musari, 2016).…”