 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 Maṇṣūr ibn ʿIkrima ibn Khaṣafa ibn Qays ʿAylān.