These lectures that are presented by Sheikh Ali Mohan are part of a number of lectures held and supervised by the Department of Religious Affairs within the preaching curriculum during the holy month of Ramadhan, and are about the important topic of worship. Each lecture discusses a certain worship subject by explaining and clarifying it with Quranic verses and holy narrations of Ahl al-Bayt (peace be upon them), supported by the practical examples that face the individual in his practical life.