Sura 47:4<ref>http://al-quran.info/#&&sura=47&aya=4&trans=en-shakir&show=both,quran-uthmani&format=rows&ver=1.00</ref>
==further Further reading==
* Firestone, Reuven. ''Jihad: The Origin of Holy War in Islam'' (1999), by a Professor at Hebrew Union College [http://www.questia.com/read/90368225?title=Jihad%3a%20The%20Origin%20of%20Holy%20War%20in%20Islam online edition]
* Knapp, Michael G. "The Concept and Practice of Jihad in Islam," ''Parameters''. Volume: 33. Issue: 1. 2003. pp 82+. Published by U.S. Army War College; [http://www.questia.com/read/5002526190?title=The%20Concept%20and%20Practice%20of%20Jihad%20in%20Islam online edition]