The History of the Four Caliphs By Shaykh Muhammad Al Khudari is now available on Free Books Mania. Islamic history pdf is about the life of first four Caliphs of Islam”Abu Bakr,Omar,Othman,Ali R.A” who established a true system of law and judiciary and implemented on the true soul of Islam. History of the four caliphs pdf is considered as a authentic source which accounts the lives of Caliphs, their reign and system of power and democracy. Free Books Mania provides the download link of this book below: