It is well known that the Almohades instituted a politico-social system or hierarchy. In it the subjects of the Almohade state were divided into ranks or grades of aristocracy which do not appear to be closely connected with their administrative arrangements but may originally have been a battle-array. The broad lines of this system are fairly clear; it is the details that are often obscure. The Mahdī's, later the Caliph's, advisers, the ‘ cabinet’ of his government, were ten men known simply as ‘ the Ten’ or Ahl al-jamā'a. Below them came a council called ‘ the Fifty ’ {Ahl Khamsīn or Ayt Khamsīn). The mass of the people were divided thus in descending order (I follow here Ibn al-Qaṭṭān, later copied by the anonymous author of the Ḥulal al-mawshiyya): the Talaba, the Ḥuffāẓ, the Ahl al-dār, Hargha, Ahl Tīnmāl, Gadmīwa, Ganfīsa, Hintāta, the Jund, the Ghuzāt, and Rumāt. Other writers have additional categories and put them in a slightly different order. Gaudefroy-Demombynes has used the Kitāb al-ansāb for the light it throws on the description of Hafsid institutions given in his partial edition of ‘Umarl's Masālik al-abṣār, and more recently Terrasse has summarized its information in his Histoire du Maroc.