Battle of Karbala in the context of "Al Abbas Mosque"

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.

The Second Fitna was the second civil war in the Islamic community during the early Umayyad Caliphate. It followed the death of the first Umayyad caliph Mu'awiya I in 680, and lasted for about twelve years. The war involved the defeat of three main challenges to the authority of the Umayyad dynasty, the first by Husayn ibn Ali, as well as his supporters including Sulayman ibn Surad and Mukhtar al-Thaqafi who rallied to avenge his death in Iraq, the second by Abd Allah ibn al-Zubayr who proclaimed himself caliph in Mecca and Medina and would be nominally recognized throughout most of the Caliphate, and the Kharijites who took over central Arabia and southern Iraq and Persia.

The roots of the civil war go back to the First Fitna. After the assassination of the third Rashidun caliph Uthman, the Islamic community experienced its first civil war over the immediate question of retribution for his murder. Following the assassination of the fourth Rashidun caliph Ali in 661 and the abdication of his successor Hasan the same year, Mu'awiya became the sole ruler of the caliphate. Mu'awiya's unprecedented decision to nominate his son Yazid as his heir sparked opposition, and tensions soared after Mu'awiya's death. Husayn ibn Ali was invited by the pro-Alids of Kufa to overthrow the Umayyads but was killed with his small company en route to Kufa at the Battle of Karbala in October 680. Yazid's army suppressed anti-government rebels in Medina in August 683 and subsequently besieged Mecca, where Ibn al-Zubayr had established himself in opposition to Yazid. After Yazid died in November the siege was abandoned, and Umayyad authority would soon collapse throughout the caliphate following the death of his son except in parts of Syria where Marwan I was proclaimed caliph; most provinces recognized Ibn al-Zubayr as caliph. A series of pro-Alid movements demanding to avenge Husayn's death emerged in Kufa, beginning with Ibn Surad's Penitents movement, which was crushed by the Umayyads at the Battle of Ayn al-Warda in January 685. Kufa was then taken over by Mukhtar, who rallied Husayn's supporters and the disenfranchised mawali to his cause. Though his forces routed a large Umayyad army at the Battle of Khazir in August 686, Mukhtar and his supporters were slain by the Zubayrids in April 687 following a series of battles. Under the leadership of Marwan, the Umayyads would consolidate their power over Syria and retake Egypt from the Zubayrids, and under his successor Abd al-Malik ibn Marwan, the Umayyads would reconquer Iraq after defeating the Zubayrids at the Battle of Maskin in 691 and would reassert their control over the Caliphate after killing Ibn al-Zubayr in the second siege of Mecca in 692, while their general Al-Hajjaj ibn Yusuf would suppress the Kharijites in the years afterwards.

The Imam al Husayn Shrine (Arabic: مَقَام الإِمَامُ الْحُسَيْن اِبِنْ عَلي, romanized: Maqām al-ʾImām al-Ḥusayn ʾibn ʿAlī) is the mausoleum of Husayn ibn Ali and Shi'ite mosque, located in the holy city of Karbala, in the Karbala Governorate of Iraq. Husayn was a grandson of Muhammad, and the site is near the place where he embraced martyrdom during the Battle of Karbala in 680 CE. The tomb of Husayn is one of the holiest sites in Shia Islam, outside of Mecca and Medina, and many make pilgrimages to the site. Every year, millions of pilgrims visit the city to observe Ashura, which marks the commemoration of Husayn's death for all Muslims.

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.