Contemporary Financial Gains And Their Provisions In Islamic Law - A Comparative Study PHD (Doctor of Philosophy) thesis by researcher: Khaled Ali Ahmed Abdul Razzaq Al-Jabri This thesis was supervised by Professor Dr. Abdul Karim Zidan, and it was discussed in Republic of Yemen/ Sana’a University/ College of Arts/ Department of Islamic Studies in the year 1428AH / 2008 AD to obtain a PHD degree in The Islamic Studies.