Proper rabia is by the oriental writers generally divided into five provinces, viz. Yaman, Hejz, Tehma, and Yamma; to which some add Bahrein, as a sixth, but this province the more exact make part of Irak: others reduce them all to two, Yaman and Hejz, the last including the three other provinces of Tehma, Najd, and Yamma. 