In the name of God, the most gracious, the most merciful

Praise be to God Almighty, who has enabled us to present this book, and we have made every effort to bring it out in this form. We hope to God that it will be of benefit and advance thought. I ask my dear brothers, respected doctors, whoever finds any failure or amendment to contact me directly, and I will write him a word of thanks at the beginning. The book is considered as an authoritative book, and we do not claim perfection because perfection belongs to God Almighty only. If we succeed, it is from God Almighty, and if we fail, it is from ourselves. We are sufficient for the honor of trying. Finally, we hope that you will like this book.