Religion

==== Islam ====
[[File:Kaaba, Makkah6.jpg|alt=|thumb|220x220px|[[Muslim]]s [[Tawaf|circumambulating]] the [[Kaaba]] in [[Mecca]], [[Saudi Arabia]], the [[Holiest sites in Islam|most sacred site]] in [[Islam]]]]
[[Islam]] is a [[Monotheism|monotheistic]]<ref name="Islam">{{cite web |title=Islam |url=https://www.history.com/topics/religion/islam#:~:text=The%20word%20%E2%80%9CIslam%E2%80%9D%20means%20%E2%80%9C,of%20complete%20submission%20to%20Allah. |website=HISTORY |access-date=10 January 2021 |language=en |archive-date=3 May 2020 |archive-url=https://web.archive.org/web/20200503051151/https://www.history.com/topics/religion/islam#:~:text=The%20word%20%E2%80%9CIslam%E2%80%9D%20means%20%E2%80%9C,of%20complete%20submission%20to%20Allah. |url-status=live }}</ref> religion based on the [[Quran]],<ref name="Islam" /> one of the [[Islamic holy books|holy books]] considered by Muslims to be [[Wahy|revealed]] by [[God in Islam|God]], and on the [[Hadith|teachings (hadith)]] of the [[Prophets of Islam|Islamic prophet]] [[Muhammad]], a major political and religious figure of the 7th century CE. Islam is based on the unity of all religious philosophies and accepts all of the [[Abrahamic religions|Abrahamic]] prophets of Judaism, Christianity and other Abrahamic religions before [[Muhammad]]. It is the most widely practiced religion of [[Southeast Asia]], [[North Africa]], [[Western Asia]], and [[Central Asia]], while [[Muslim-majority countries]] also exist in parts of [[South Asia]], [[Sub-Saharan Africa]], and [[Southeast Europe]]. There are also several [[Islamic republic]]s, including [[Iran]], [[Pakistan]], [[Mauritania]], and [[Afghanistan]]. With about 1.8 billion followers (2015), almost a quarter of [[world population|earth's population]] are [[Muslims]].<ref>{{cite web|url=http://www.pewforum.org/2017/04/05/the-changing-global-religious-landscape/|website=Pew Research Center|date=5 April 2017|title=The Changing Global Religious Landscape|access-date=20 October 2018|archive-date=6 April 2017|archive-url=https://web.archive.org/web/20170406033738/http://www.pewforum.org/2017/04/05/the-changing-global-religious-landscape/|url-status=live}}</ref> 
* [[Sunni Islam]] is the largest denomination within Islam and follows the Qur'an, the ahadith (plural of Hadith) which record the [[sunnah]], whilst placing emphasis on the [[sahabah]].
* [[Shia Islam]] is the second largest denomination of Islam and its adherents believe that [[Ali]] succeeded Muhammad and further places emphasis on Muhammad's family.
* There are also Muslim revivalist movements such as [[Muwahhidism]] and [[Salafism]].

Other denominations of Islam include [[Nation of Islam]], [[Ibadi]], [[Sufism]], [[Quranism]], [[Mahdavia]], [[Ahmadiyya]] and [[non-denominational Muslims]]. [[Wahhabism]] is the dominant Muslim [[Maddhab|schools of thought]] in the [[Kingdom of Saudi Arabia]].