The author asserts that Islamic economics is currently the result of applying Islamic rules and injunctions (Fiqh) to the secular economic framework, and is not yet a separate discipline that fully replaces secular economics. The author notes that methodology is a messy and confusing area in both fields. He highlights that in Islamic economics, it is often wrongly treated as a research design or work plan. The author explains that economics is usually called ‘science’ and is seen to be built for achieving its objectives on some perception of rationality. Methodology is the ‘theory of theories’; in the field of economics it refers to the “process economists use to authenticate the knowledge about economic phenomena”.