Classical Arabic or Quranic Arabic (Arabic: العربية الفصحى, romanized: al-ʻArabīyah al-Fuṣḥā, lit. 'the most eloquent Arabic') is the standardized literary form of Arabic used from the 7th century and throughout the Middle Ages, most notably in Umayyad and Abbasid literary texts such as poetry, elevated prose and oratory, and is also the liturgical language of Islam, "Quranic" referring to the Quran. Classical Arabic is, furthermore, the register of the Arabic language on which Modern Standard Arabic is based.
Several written grammars of Classical Arabic were published with the exegesis of Arabic grammar being at times based on the existing texts and the works of previous texts, in addition to various early sources considered to be of most venerated genesis of Arabic. The primary focus of such works was to facilitate different linguistic aspects.