Umayr ibn al-Hubab in the context of "Banu Kalb"

The Banu Sulaym (Arabic: بنو سليم) is 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 death in 632. They took part in the Muslim conquest of Syria, and established themselves in the Jazira (Upper Mesopotamia), while part of the tribe remained in the Hejaz. During the early Muslim period, the tribe produced notable 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 and the Jazira were expelled to Upper Egypt by the Fatimid Caliphs in the late 10th century for supporting the Qarmatians. In the mid-11th century, a prolonged famine in Egypt prompted the tribe to migrate westward with the Banu Hilal into Libya. There, the Sulaym and its sub-tribes established themselves mainly in Cyrenaica, where to the present day, many of the Arab tribes of that region trace their descent to the Sulaym.