Since this book considers criticizing and analyzing the presuppositions of non-Islamic communities as the first step in the diagnosis of the behavioral presuppositions of an Islamic society, it first describes and examines the presuppositions at an elementary level to provide the microeconomics appropriate to the Islamic society. Hence it does not seek to provide microeconomic science and only presents some presuppositions of the microeconomics in an Islamic society. This book does not also claim that all the presuppositions are covered and mentioned; however, it can be of use to the scholars of Islamic economics and serve as a secondary source for students in different fields of economics.