"Al Kabair" is an Arabic book written by Imam Muhammad bin 'Uthman Al Dhahbi. It presents a list of major sins and transgressions that every Muslim should avoid. The book lists 70 major sins with the aim of raising awareness among heedless hearts about the serious consequences of these reprehensible acts. It discusses prohibitions and things that are discouraged. The topics are presented in a clear and understandable language, with a style that avoids complexity or ambiguity. This book is beneficial for the undecided and the repentant, a warning for the careless and the suspicious, a reprimand for the sinners and the misguided, and a guide for those seeking to follow the path of Allah and truth.