The present study provides a historical overview of the Hyâyna, Arab nomads from the Banu Hilal group, as well as information on the geography, administrative divisions and the agricultural and social sectors of the Hyâyna region. As the first detailed presentation, it deals in detail with this ethnic group and its language. It also provides valuable insights into the problem of Arabization of significant parts of Morocco between the 11th and 14th centuries. In the present case, it is not...