Ismail Kamdar Productivity Principles of Umar 11 Umar Bin 'Abd Al-'Aziz Foreword by: Dr Yasir Qadhi - 2020 - South Africa Islamic Self Help 2020 ISBN: Subjects--Topical Terms: Religious History & GeographyBanu Umayyad DynastyDynasty of Umar Ibn Abdul Aziz LC Class. No.: BP68