The Banu Sulaym (Arabic: ?) were an Arab tribe that dominated part of the Hejaz in the pre-Islamic era. They maintained close ties with the Quraysh of Mecca and the inhabitants of Medina, and fought in a number of battles against the Islamic prophet Muhammad before ultimately converting to Islam before his demise in 632. They took part in the Muslim conquest of the Levant, and established themselves in Upper Mesopotamia, whilst part of the tribe remained in the Hejaz. During the early Muslim era, the tribe produced noted generals such as Safwan ibn Mu'attal, Abu'l-A'war and Umayr ibn al-Hubab. Those who remained in Arabia were largely absorbed by the Banu Harb of Yemen beginning in the 9th century, while those in Syria, Mesopotamia were expelled to Upper Egypt by the Fatimid Caliphs in the late 10th century for assisting the Qarmatians. In the mid-11th century, a prolonged famine in Egypt prompted the tribe to migrate westward with the Banu Hilal into Libya. The Sulaym and its sub-tribes established themselves mainly in Cyrenaica,Libya, where until the present day, many of the Arab tribes of that region trace their descent to the Sulaym.
According to Arab genealogical tradition, the Banu Sulaym were descendants of Sulaym ibn Mar ibn ?Ikrima ibn Kha?afa ibn Qays ?Ayl?n. Thus, the Sulaym were part of the wider tribal grouping of Qays 'Aylan (also referred to simply as "Qays"). The Banu Sulaym was divided into three main divisions, Imru' al-Qays, Harith and Tha'laba, all founded by sons or grandsons of the tribe's progenitor, Sulaym.
In the pre-Islamic era, i.e. prior to the 610s, and in the early Islamic era, the Sulaym inhabited the northern Hejaz, with the Harrah volcanic field forming the heart of their territory. The latter was formerly named ?arrat Ban? Sulaym after the tribe. It was an ideal defensive region as enemy horsemen could not manage its terrain or enter its eastern and western slopes, where the Sulaym had their ?im?s (protected pastures). The Imru' al-Qays division largely inhabited the Harrah's eastern slopes, where the division's Bahz branch owned lucrative gold mines. The Harith were mostly concentrated in the western slopes of the Harrah, though members of its Mu'awiyah branch inhabited the city of Yathrib (Medina) prior to the arrival of the Arab Jewish tribes of Banu Aws and Banu Khazraj. In time, the Mu'awiyah branch converted to Judaism. Some tribesmen of the Tha'laba branch lived in Mecca and Medina as well.
After the Muslim conquests of the 630s, most Sulaymi tribesmen migrated to northern Syria and from there to the Jazira (Upper Mesopotamia), though others from the tribe settled in Kufa, Basra and throughout Khurasan. However, a significant Sulaymi presence was maintained in the tribe's Arabian homeland. Beginning in the 11th century, parts of the Banu Sulaym set up their encampments in Cyrenaica (modern-day eastern Libya). Until the present day, descendants of the Sulaym, known as Sa'ada, dominate Cyrenaica. The Sa'adi are divided into two main divisions, the Harabi and Jabarina. The former consist of the Ubaydat, Bara'asa, Hasa, Derasa and Aylat Fayid tribes, while the Jabarina consist of the 'Awaqir, Magharba, Majabira, Aryibat and Baraghith; the latter also includes the clans of 'Abid and 'Arafa.
From their homeland in the Hejaz, the Sulaym maintained close relations with other Qaysi tribes, particularly the Hawazin. Members of the tribe's Dhakwan clan formed strong ties with the Meccans in the late 6th century, namely the Quraysh. Prior to that, a chief of the Dhakwan, Muhammad ibn al-Khuza'i, was made commander of a contingent of Rabi'a and Mudar tribal confederates by Abraha, the Aksumite viceroy of Yemen and enemy of the Meccans. Another member of the Dhakwan, al-Hakim ibn Umayya, served as muhtasib of pre-Islamic Mecca, charged with supervising law and order with the unanimous consent of the Qurayshi clans. The Sulaym also maintained good relations with the people of Medina, selling horses, camels, sheep and clarified butter in the city's markets and mediating between rival clans of the Banu Aws. They also worshiped Khamis, the a pagan idol shared with the Banu Khazraj.
The Sulaym were involved in number of faraway expeditions into Yemen and southwestern Arabia, including a raid led by the Sulaymi chief al-Abbas ibn Mirdas against the tribes of Zubayd and Quda'a, and another against the Kinda and Quda'a in Saada during which al-Abbas' brother was killed. According to historian Michael Lecker, the Sulaym's involvement in Yemeni expeditions was likely linked to their joint role with the Hawazin in escorting caravans from al-Hirah to Yemen and the Hejaz.
During Muhammad's activities in Mecca and Medina, the Sulaym, as their Qurayshi allies, were hostile to Muhammad and his message. An exception among the tribesmen was Safwan ibn Mu'attal, a member of the Dhakwan in Medina who became a companion of Muhammad. Several clans of the Sulaym joined the Kilabi chief Amir ibn al-Tufayl in his attack targeting Muslim missionaries at Bi'r Ma'una in 625. The Sulaym under the Dhakwani chief Sufyan ibn 'Abd Shams continued to fight alongside the Quraysh at the Battle of the Trench in 627, but by the time Muhammad victoriously entered Mecca in January 630, the vast majority of the Sulaym had converted to Islam and defected to his side. They fought alongside Muhammad and the Quraysh against a coalition of pagan Arab tribes at the Battle of Hunayn later that year; only Sufyan ibn 'Abd Shams's son Abu'l-A'war fought alongside the pagans.
Most of the Sulaym apostatized from Islam during the caliphate of Abu Bakr, following the death of Muhammad in 632. Among the apostate Sulaymi divisions and clans were the 'Awf ibn Imru' al-Qays, the 'Usayya and Sharid, the 'Amira led by al-Fuja'a, the Jariya and possibly the Dhakwan. Nonetheless, following the Muslim victory in the Ridda Wars, Sulaymi contingents participated in the Muslim conquests of Syria and Iraq. In the First Muslim Civil War, there were some Sulaymi tribesmen who sided with Caliph Ali, but most apparently backed Mu'awiyah I, where their support proved to be a major contribution to his ultimate victory in 661. One of Mu'awiyah's generals in this war was the aforementioned Abu'l-A'war ibn Sufyan.
As members of the Qays confederation, the Sulaym defected from the Umayyads and recognized Abdullah ibn al-Zubayr's caliphate. They participated in the Battle of Marj Rahit in 684, during which the Umayyads and their Kalbi allies routed the Qays. About 600 members of the Sulaym were slain during the battle. Later, in 686, the Sulaym exacted revenge on the Umayyads when, under their Dhakwani chief Umayr ibn al-Hubab, they defected midway during the Battle of Khazir, which resulted in an Umayyad rout at the hands of al-Mukhtar al-Thaqafi's forces. Afterward, Umayr and the Sulaym joined the paramount Qaysi rebel leader Zufar ibn al-Harith al-Kilabi, who was based in al-Qarqisiyah. Under Umayr the Sulaym encroached on the tribal territory of the Taghlib along the Khabur River, provoking a war with the Taghlib, in the course of which Umayr was ultimately slain in 689. Afterward, the Sulaym were led by al-Jahhaf ibn Hakim al-Dhakwani in their final battles with the Taghlib in 692 and 693.
The Sulaym in Arabia rebelled against the Abbasid authorities in 845. Toward the end of the 9th century, the Harb tribe from Yemen entered Sulaymi territory in the Hejaz and gradually absorbed much of the Sulaym of Arabia. The Banu Sulaym and the Banu Hilal were among the Qaysi tribes that allied with the rebel Qarmatian movement in attacking the Fatimids in Syria. In response to this, the Fatimid caliph al-Aziz (r. 975-996) managed to forcibly relocate the two tribes to Upper Egypt. Both tribes were massive and compared to nations by historian Amar S. Baadj. The Sulaymi tribes or sub-tribes that were expelled to Upper Egypt consisted of the Hayb, Labid, Dabbab, Awf, Zughba and Rawaha; each of these contained numerous clans.
Medieval Muslim chroniclers report that in 1050 or 1051, the Sulaymi and Hilali nomads were dispatched or encouraged to migrate to and take over Ifriqiyah by the Fatimids to punish that region's Zirid rulers for switching allegiance to the rival Abbasid Caliphate. However, Baadj urges that such reports "ought to [be] treat[ed] with skepticism" as the Fatimid state at the time was undergoing the Great Crisis, which was marked by a long famine and severe political instability. Thus, the Fatimids were not in a position to coerce the two Bedouin tribes to invade the Zirid realm; rather, the poor conditions in Egypt, namely the threat of starvation, motivated the Banu Sulaym and Banu Hilal to migrate westward into the Maghreb. The migration may have taken place in one large wave or in multiple waves, but in any case, the Sulaym apparently established themselves in Cyrenaica and Tripolitania, while the Banu Hilal continued on to Zirid-held Ifriqiyah and Qayrawan.
By the mid-12th century, the Banu Sulaym drove the Banu Hilal from Ifriqiyah and forced them to move west and south. In the late 12th century, all of the Sulaym of Cyrenaica joined the cause of the Ayyubid mamluk Qaraqush and the Almoravid warlord Ali ibn Ishaq ibn Ghaniyah against the Almohad Caliphate. However, this alliance soon unfolded and the Sulaym bore the brunt of attacks by Qaraqush, particularly the Dabbab sub-tribe, whose leaders he massacred.