The course description includes evidence of the principles of jurisprudence, and its applications in reality, with an introduction to its various sources. It includes: the meaning of evidence and its divisions, and the meaning of indication and its divisions in general. The evidence of the Qur’an and its authority and the issues related to it in detail. The evidence of the Sunnah and its authority and its divisions according to different considerations, and responding to the doubts of those who deny it, and the issues related to it, abrogation and the issues related to it in detail.