This book in it's original format was a Doctor's Thesis in Islamic Legislation from the Faculty of Dar al-Uloom presented to the University of Cairo. This book was written to clarify and to give a clear picture of the some of the Qawaa'id of Usool al-Fiqh. Rich in Benefit and shows how the exploration of rulings are based upon these different principles and how they are applied in a correct manner and put into practice. Some of the book is based upon the Fatwaa of Shaykhul Islaam Ibn Taymiyyah . Written by Doctor Ibraheim Ayman Hamza 'Abdul Hameed. Printed on 640 pages of yellow paper.