 Prior to that, a chief of the Dhakwan, Muhammad ibn al-Khuza'i, was made commander of a contingent of Rabi'a and Mudar tribal confederates by Abraha, the Aksumite viceroy of Yemen and enemy of the Meccans.Another member of the Dhakwan, al-Hakim ibn Umayya, served as "muhtasib" of pre-Islamic Mecca, charged with supervising law and order with the unanimous consent of the Qurayshi clans.The Sulaym also maintained good relations with the people of Medina, selling horses, camels, sheep and clarified butter in the city's markets and mediating between rival clans of the Banu Aws.