Charles William Wilson and Henry Creswicke Rawlinson, 1911 Encyclopædia Britannica, Volume 15… (1911)
“ The most flourishing period of Kūrdish power was probably during the 12th century of our era, when the great Saladin, who belonged to the Rawendi branch of the Hadabāni tribe, founded the Ayyubite dynasty of Syria, and Kūrdish chiefships were established, not only to the east and west of the Kūrdistān mountains, but as far as Khorāsān upon one side and Egypt and Yemen on the other. During the Mongol and Tatar domination of western Asia the Kūrds in the mountains remained for the most part passive, yielding a reluctant obedience to the provincial governors of the plains. ”
