jurisprudence explains this system and is one if the deepest and widest Islamic science.

Islamic jurisprudence is one of the sciences that glorify the Islamic civilization.

This jurisprudential system started with the proclamation to prophethood. Its principles were perfected during the life of the prophet.

We will try, in this humble effort, to describe the important general and specific topics that are covered under jurisprudence. The style of this book is in the form of a book to be taught in schools and it is a prelude to the field of comparative jurisprudence.

I ask Allah, the most high, to make this effort fruitful and to grace me by accepting it and to correct our intentions and actions. Definitely, he is the best helper.

Also, I give special thanks to professor, Shaykh Mahmūd al-Sayf and professor, Dr. Ya‛qūb ‛Alī Barjī for their remarks and guidance.

Hassan al-Ridā'ī

1426 Hijrī - Qum al-Muqadasah