Qays 'Aylan

Qays ʿAylān (قيس عيلان) was a major Arab tribal confederation originating from the Mudar group in the Arabian Peninsula. Although not a unified entity in pre-Islamic times, its constituent tribes became a significant political faction during the early Umayyad Caliphate. The confederation included prominent tribes such as Ghatafan, Hawazin, Amir, Thaqif, and Sulaym, many of whom migrated to northern Syria and Upper Mesopotamia, playing key roles in the early Islamic period. Their influence waned under the Abbasids, but some tribes established power in North Africa and al-Andalus.