The Theory of coming-to-be and passing away based on the summary of averroes

The concepts of generation and corruption are broad subject in the philosophical tradition. To limit the subject, this thesis will discuss Ibn Rushd's study Telhîsu'l-kevn ve'l-fesâd, which determines the idea of generation and corruption. In the first part of the study, which consists of two parts, the theory of generation and corruption is mentioned; in the second part, the elements of the object are is mentioned. The main starting points of the concepts of generation and corruption are revealing the difference between absolute generation and the realization of qualified corruption and the realization of alterations, identifiying the basic principles of generation and corruption and the elements of the object, determining the aspects of generation and corruption of composite objects, ıt is the determination of the function of increase and decrease, contact, effect, passion and mixture in formation. The aim of choosing the subject, it is to examine how the theory of generation and corruption is understood in the context of Ibn Rushd's thought and to include his evaluations on the subject. For this purpose, the thoughts of Aristotle as the author of "On Generation and Corruption", the thoughts of Ibn Rushd as the commentator who wrote an annotation to this study, and the thoughts of pre-Socratic philosophers, and the way in which the problems about the subject are handled in Telhîsu'l-kevn ve'l-fesâd are explained. As a result, the basic concepts, principles and theories of the subject has been identified. It has been revealed how the interpretation of Ibn Rushd affected Aristotle's theory of generation and corruption and how it contributed. Keywords: Ibn Rushd, Telhîsu'l-kevn ve'l-fesâd, Coming-to-be and passing, Alteration, Pre-Socratic philosophers.