Abd Allah ibn al-Zubayr in the context of "Qays–Yaman rivalry"

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.

Marwan ibn al-Hakam ibn Abi al-As ibn Umayya (Arabic: مروان بن الحكم بن أبي العاص بن أمية, romanized: Marwān ibn al-Ḥakam ibn Abī al-ʿĀṣ ibn Umayya; 623 or 626 – April/May 685), commonly known as Marwan I, was the fourth Umayyad caliph, ruling for less than a year in 684–685. He founded the Marwanid ruling house of the Umayyad dynasty, which replaced the Sufyanid house after its collapse in the Second Fitna and remained in power until 750.

During the reign of his cousin, the third Rashidun caliph Uthman (r. 644–656), Marwan took part in a military campaign against the Byzantine Exarchate of Africa (in central North Africa), where he acquired significant war spoils. He also served as Uthman's governor in Fars (southwestern Iran) before becoming the caliph's katib (secretary or scribe). He was wounded fighting the rebel siege of Uthman's house, in which the caliph was slain. In the ensuing civil war between the fourth Rashidun caliph Ali (r. 656–661) and the largely Qurayshite partisans of Aisha, Marwan sided with the latter at the Battle of the Camel. Marwan later served as governor of Medina under his distant kinsman Caliph Mu'awiya I (r. 661–680), founder of the Umayyad Caliphate. During the reign of Mu'awiya's son and successor Yazid I (r. 680–683), Marwan organized the defense of the Umayyad realm in the Hejaz (western Arabia) against the local opposition which included prominent companions as well as Muhammad’s own clan, the Bani Hashim, who revolted under the banner of Muhammad’s grandson, Husayn ibn Ali. After Yazid died in November 683, the Mecca-based rebel and sahabi Abd Allah ibn al-Zubayr declared himself caliph and expelled Marwan, who took refuge in Syria, the center of Umayyad rule. With the death of the last Sufyanid caliph Mu'awiya II in 684, Marwan, encouraged by the ex-governor of Iraq Ubayd Allah ibn Ziyad, volunteered his candidacy for the caliphate during a summit of pro-Umayyad tribes in Jabiya. The tribal nobility, led by Ibn Bahdal of the Banu Kalb, elected Marwan and together they defeated the pro-Zubayrid Qays tribes at the Battle of Marj Rahit in August of that year.

The Battle of Karbala (Arabic: مَعْرَكَة كَرْبَلَاء, romanized: Maʿrakat Karbalāʾ) was fought on 10 October 680 (10 Muharram in the year 61 AH of the Islamic calendar) between the army of the second Umayyad caliph Yazid I (r. 680–683) and a small army led by Husayn ibn Ali, the grandson of the Islamic prophet Muhammad, at Karbala, Sawad (modern-day southern Iraq).

Prior to his death, the Umayyad caliph Mu'awiya I (r. 661–680) had nominated his son Yazid as his successor. Yazid's nomination was contested by the sons of a few prominent companions of Muhammad, including Husayn, son of the fourth caliph Ali, and Abd Allah ibn al-Zubayr, son of Zubayr ibn al-Awwam. Upon Mu'awiya's death in 680, Yazid demanded allegiance from Husayn and other dissidents. Husayn did not give allegiance and traveled to Mecca. The people of Kufa, an Iraqi garrison town and the center of Ali's caliphate, were averse to the Syria-based Umayyad caliphs and had a long-standing attachment to the house of Ali. They proposed Husayn overthrow the Umayyads. On Husayn's way to Kufa with a retinue of about 70 men, his caravan was intercepted by a 1,000-strong army of the caliph at some distance from Kufa. He was forced to head north and encamp in the plain of Karbala on 2 October, where a larger Umayyad army of 4,000 arrived soon afterwards. Negotiations failed after the Umayyad governor Ubayd Allah ibn Ziyad refused Husayn safe passage without submitting to his authority, a condition declined by Husayn. Battle ensued on 10 October during which Husayn was killed along with most of his relatives and companions, while his surviving family members were taken prisoner. The battle was the start of the Second Fitna, during which the Iraqis organized two separate campaigns to avenge the death of Husayn; the first one by the Tawwabin and the other one by Mukhtar al-Thaqafi and his supporters.

The Uthmanic codex is the only edition of the Quran compiled by the third Rashidun caliph Uthman ibn Affan. He ordered it to be copied and the copies sent to Islamic countries, after the death of Muhammad. The Quran was collected in a single book by order of the first caliph Abu Bakr al-Siddiq, and when the caliphate was handed over to Uthman ibn Affan, the Islamic conquests expanded and the companions spread in the conquered countries, teaching people the Quran and how to read its different readings. When the Companion Hudhayfah ibn al-Yaman noticed that Muslims differed in reading and some of this difference was tinged with melody, he told the Caliph about it, and Uthman ordered that the Quran be collected in one way. He sent Hafsa bint Umar to allow him to use the copy of the Quran in her possession to use it as a reference, and Uthman ordered several copies of the Quran to unify the reading and ordered them to be distributed to the Muslim countries, and ordered the destruction of anything that contradicts that Quran.

Uthman ibn Affan formed a committee to write the Quran: Zayd ibn Thabit, Abd Allah ibn al-Zubayr, Sa'id ibn al-'As, and 'Abd al-Rahman ibn al-Harith ibn Hisham, then he gave Zayd ibn Thabit and the three Qurayshis the Quran that had been with Hafsa bint 'Umar, and he ordered them to copy the Quran from it, and he said: "If you and Zayd ibn Thabit disagree on something in the Quran, write it in the Quraysh tongue, for it was revealed in their tongue." The collection and copying of the Quran began in late 24 AH and early 25 AH, and historians have not dated how long it took the committee to write the Quran.

Yazid ibn Mu'awiya ibn Abi Sufyan (c. 646 – 11 November 683), commonly known as Yazid I, was the second caliph of the Umayyad Caliphate, ruling from April 680 until his death in November 683. His appointment by his father Mu'awiya I (r. 661–680) was the first hereditary succession to the caliphate in Islamic history. His caliphate was marked by the death of Muhammad's grandson Husayn ibn Ali and the start of the crisis known as the Second Fitna.

During his father's caliphate, Yazid led several campaigns against the Byzantine Empire including an attack on the Byzantine capital, Constantinople. Yazid's nomination as heir apparent in 676 CE (56 AH) by Mu'awiya was opposed by several Muslim grandees from the Hejaz region, including Husayn and Abd Allah ibn al-Zubayr. The two men refused to recognize Yazid following his accession and took sanctuary in Mecca. When Husayn left for Kufa in Iraq to lead a revolt against Yazid, he was killed with his small band of supporters by Yazid's forces in the Battle of Karbala. Husayn's death caused resentment in the Hejaz, where Ibn al-Zubayr called for a consultative assembly to elect a new caliph. The people of Medina, who supported Ibn al-Zubayr, held other grievances toward the Umayyads. After failing to gain the allegiance of Ibn al-Zubayr and the people of the Hejaz through diplomacy, Yazid sent an army to suppress their rebellion. The army defeated the Medinans in the Battle of al-Harra in August 683 and the city was plundered. Afterward, Mecca was besieged for several weeks until the army withdrew as a result of Yazid's death in November 683. The Caliphate fell into a nearly decade-long civil war, ending with the establishment of the Marwanid dynasty (the Umayyad caliph Marwan I and his descendants).

Abd al-Malik ibn Marwan ibn al-Hakam (July/August 644 or June/July 647 – 9 October 705), was the fifth Umayyad caliph, ruling from April 685 until his death in October 705. A member of the first generation of born Muslims, his early life in Medina was occupied with religious pursuits. He held administrative and military posts under Caliph Mu'awiya I (r. 661–680), founder of the Umayyad Caliphate, and his own father, Caliph Marwan I (r. 684–685). By the time of Abd al-Malik's accession, Umayyad authority had collapsed across the Caliphate as a result of the Second Fitna and had been reconstituted in Syria and Egypt during his father's reign.

Following a failed invasion of Iraq in 686, Abd al-Malik focused on securing Syria before making further attempts to conquer the greater part of the Caliphate from his principal rival, the Mecca-based caliph Abd Allah ibn al-Zubayr. To that end, he concluded an unfavorable truce with the reinvigorated Byzantine Empire in 689, quashed a coup attempt in Damascus by his kinsman, al-Ashdaq, the following year, and reincorporated into the army the rebellious Qaysi tribes of the Jazira (Upper Mesopotamia) in 691. He then conquered Zubayrid Iraq and dispatched his general, al-Hajjaj ibn Yusuf, to Mecca where he killed Ibn al-Zubayr in late 692, thereby reuniting the Caliphate under Abd al-Malik's rule. The war with Byzantium resumed, resulting in Umayyad advances into Anatolia and Armenia, the destruction of Carthage and the recapture of Kairouan, the launchpad for the later conquests of western North Africa and the Iberian Peninsula, in 698. In the east, al-Hajjaj had become Abd al-Malik's viceroy and firmly established the caliph's authority in Iraq and Khurasan, stamping out opposition by the Kharijites and the Arab tribal nobility by 702. Abd al-Malik's final years were marked by a domestically peaceful and prosperous consolidation of power.

Al-Mukhtar ibn Abi Ubayd al-Thaqafi (Arabic: الْمُخْتَار ٱبْن أَبِي عُبَيْد الثَّقَفِيّ, romanized: al-Mukhtār ibn Abī ʿUbayd al-Thaqafī; c. 622 – 3 April 687) was an Arab pro-Alid revolutionary based in Kufa, who led a rebellion against the Umayyad Caliphate in 685 and ruled over most of Iraq for eighteen months during the Second Fitna.

Born in Ta'if, Mukhtar moved to Iraq at a young age and grew up in Kufa. Following the death of Husayn ibn Ali, a grandson of the Islamic prophet Muhammad, at the hands of the Umayyad army in the Battle of Karbala in 680, he allied with the rival caliph Abd Allah ibn al-Zubayr in Mecca, but the alliance was short-lived. Mukhtar returned to Kufa where he declared Muhammad ibn al-Hanafiyya, a son of caliph Ali (r. 656–661) and brother of Husayn, the mahdi and the imam, and called for the establishment of an Alid caliphate and retaliation for Husayn's killing. He took over Kufa in October 685, after expelling its Zubayrid governor, and later ordered the execution of those involved in the killing of Husayn. Hostile relations with Ibn al-Zubayr ultimately led to Mukhtar's death by the forces of the Zubayrid governor of Basra, Mus'ab ibn al-Zubayr, following a four-month siege.

The siege of Mecca in September–November 683 was one of the early battles of the Second Fitna. The city of Mecca was a sanctuary for Abd Allah ibn al-Zubayr, who was among the most prominent challengers to the hereditary succession to the Caliphate by Yazid I of the Umayyad dynasty. After nearby Medina, the other holy city of Islam, also rebelled against Yazid, the Umayyad ruler sent an army to subdue the Hejaz. The Umayyad army defeated the Medinans and took the city, but Mecca held out in a month-long siege, during which the Kaaba was damaged by fire. The siege ended when news came of Yazid's sudden death. The Umayyad commander, Husayn ibn Numayr al-Sakuni, after failing to induce Ibn al-Zubayr to return with him to Syria and be recognized as Caliph, departed with his forces. Ibn al-Zubayr remained in Mecca throughout the civil war, but he was nevertheless soon acknowledged as Caliph across most of the Muslim world. It was not until 692 that the Umayyads were able to send another army, which again besieged and captured Mecca, ending the civil war.

The Battle of Khazir (Arabic: يوم الخازر, romanized: Yawm Khāzir) took place in August 686 near the Khazir River in Mosul's eastern environs, in modern-day Iraq. The battle occurred during the Second Muslim Civil War and was part of the larger struggle for control of Iraq between the Syria-based Umayyad Caliphate, the Kufa-based pro-Alid forces of Mukhtar al-Thaqafi, and the Mecca-based caliphate of Abd Allah ibn al-Zubayr. It ended with the Umayyads being routed and the expansion of Mukhtar's rule into the region of Mosul.

The Muslim civil war left the Umayyad realm restricted to Damascus and its environs after most of their territories came under Ibn al-Zubayr's orbit. However, an Umayyad resurgence began with the accession of Caliph Marwan I, who dispatched an army led by Ubayd Allah ibn Ziyad to reconquer Iraq. This army's advance into Mosul precipitated the Battle of Khazir and its commander, Ubayd Allah, was an enemy of Mukhtar's pro-Alid partisans. Thus, Mukhtar quickly moved to halt the Umayyad advance, sending his Persian mawālī-dominated forces led by Ibrahim ibn al-Ashtar to confront the predominantly Syrian Arab army of the Umayyads. During the initial combat, part of Ibn al-Ashtar's forces were put to flight, but then regrouped under his command and charged against the Umayyad center. This resulted in heavy casualties on both sides and Ubayd Allah and several of his lieutenants were slain. The Umayyad commander Umayr ibn al-Hubab and his Sulaymi tribesmen deserted while the pro-Alids pursued the remaining Umayyad troops, scores of whom drowned in the Khazir River.