 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.