Banu Sulaym
According to Arab genealogical tradition, the Banu Sulaym were descendants of Sulaym ibn Maṇṣūr ibn ʿIkrima ibn Khaṣafa ibn Qays ʿAylān. 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.