This study aims to identify and portray the main historical and civilizational features of the linguistic reality in Al-Maghreb and Al-Andalus, based on the Muqaddema of Ibn Khaldun (d. 808 A.H\1406 A.D), who was a witness to many of the scientific aspects of civilization in both countries, especially the Arabic language sciences, Literatures and arts, which A large bulk of, had transferred from the Islamic East and reached Al-Andalus and Al-Maghreb countries, where many scholars emerged and became famous. Ibn Khaldun had divided sciences into two divisions: Inherited and Mentality, and considered the Arabic Language sciences within the Inherrited ones, linking their appearance and prosperity in the islamic countries with two things; "Umran"(urbanism, culture and civilization), and continuity in the transmission of knowledge from one generation to another in major cities, due to the availability of these factors in Al-Maghreb and al-Andalus; in particular, such as before the destruction of Kairouan by Hilalian tribes during the fifth A.H century/eleventh A.D century, and before the fall of Cordoba by Spaniards during the seventh A.H century/thirteenth A.D century. Despite Ibn Khaldun's pessimism towards scientific situation during his era, he mentioned many scholars who maintained and protected the Arabic language and spreaded it in Al-Maghreb and Al-Andalus through their published books in various Arabic Syntax, Linguistics, Semantics, Poetry, Poetic Triplets, and Zajal. These books constituted and shaped the cultural, educational and Islamic identity. Much researchs has been done in Arabic linguistics, mainly in Al-Maghreb and Al-Andalus counties, yet most of them did not analyze the contents of the Muqaddema which relate to Arabic in these two areas. Finally, This study intends to investigate the reality of Arabic in the Muqaddema in order to shed some light on the features of the historical relationships between these two areas of the Western Islamic world, as well as the mutual interaction that went side by side with the linguistic development there.
Key Words: Ibn Khaldun Al-Maghreb Al-Andalus Arabic Language Muwashshah Zajal.