Blau Joshua. The Beginnings of the Arabic Diglossia: A Study of the Origins of Neoarabic

Undena Publications, 1974. — 36 p. — (Monographic journals of the Near East: Afroasiatic linguistics 4.4).The Central Arabic dialects partaking in the ‘arabiyya, were of Old Arabic type, perhaps also Nabatean Arabic. Nothing can be inferred for the emergence of Neoarabic from the redundancy of the Old Arabic case system, since redundancy of cases is a general feature. Arabic diglossia arose as late as the first Islamic century in the towns of the Arabic empire, to a great extent as a result of the great Arab conquests, without the intermediary of any koine. There arose no common Bedouin language in the military camps to constitute the basis of Islamic early Standard Arabic, either.