Imam Husayn Shrine in the context of Shi'ite

Shia Islam is the second-largest branch of Islam. It holds that Muhammad designated Ali ibn Abi Talib (r. 656–661) as both his political successor (caliph) and as the spiritual leader of the Muslim community (imam). However, his right is understood to have been usurped by a number of Muhammad's companions at the meeting of Saqifa, during which they appointed Abu Bakr (r. 632–634) as caliph instead. As such, Sunni Muslims believe Abu Bakr, Umar (r. 634–644), Uthman (r. 644–656) and Ali to be 'rightly-guided caliphs', whereas Shia Muslims regard only Ali as the legitimate successor.

Shia Muslims believe that the imamate continued through Ali's sons, Hasan and Husayn, after which various Shia branches developed and recognized different imams. They revere the ahl al-bayt, the family of Muhammad, maintaining that they possess divine knowledge. Shia holy sites include the shrine of Ali in Najaf, the shrine of Husayn in Karbala, and other mausoleums of the ahl al-bayt. Later events, such as Husayn's martyrdom in the Battle of Karbala (680 CE), further influenced the development of Shia Islam, contributing to the formation of a distinct religious sect with its own rituals and shared collective memory.

Karbala is a major city in central Iraq. It is the capital of Karbala Governorate. With an estimated population of 691,100 people in 2024, Karbala is the second largest city in central Iraq, after Baghdad. The city is located about 100 km (62 mi) southwest of Baghdad, and a few miles east of Lake Milh, also known as Razzaza Lake. Karbala is one of the main political, spiritual and cultural hubs of Shi'a Islam.

The city, best known as the location of the battle of Karbala in 680 AD between Husayn ibn Ali and his band of several dozen followers, including some armed women, and several thousand soldiers led by General Umar ibn Sa'd on behalf of Ubayd Allah ibn Ziyad, the local governor who was acting on the orders of Yazid ibn Mu'awiya With presence of the shrines of Hussain and Abbas, Karbala is considered a holy city for Muslims. Soon, Karbala emerged as an important center of pilgrimage for Shiite Muslims across the world. During the Abbasid era, the city witnessed many events. After the fall of Baghdad in 1258, Karbala came under the control of Mongolian Empire led by Hulegu Khan. The city continued to be under multiple successive empires.