Note 11 — Chapter X · THE SPREAD OF ISLAM IN CHINA.
Reading edition
It is not improbable that the other great national movement that originated among the Berber tribes, viz. the rise of the Almohads at the beginning of the twelfth century, may have attracted into the Muslim community some of the tribes that had up to that time still stood aloof. Their founder, Ibn Tūmart, popularised the sternly Unitarian tenets of this sect by means of works in the Berber language which expounded from his own point of view the fundamental doctrines of Islam, and he made a still further concession to the nationalist spirit of the Berbers by ordering the call to prayer to be made in their own language.11