Sibawayh
Sibawayh (Arabic: سِيبَوَيْه IPA: [siːbæˈwæjh] (also pronounced [siːbæˈweː(h)] in many modern dialects) Sībawayh; Persian: سیبُویه Sēbūyeh [seːbuːˈje]; c. 760–796), whose full name is Abu Bishr Amr ibn Uthman ibn Qanbar al-Basri (أَبُو بِشْر عَمْرو بْن عُثْمَان بْن قَنْبَر ٱلْبَصْرِيّ, ʾAbū Bišr ʿAmr ibn ʿUṯmān ibn Qanbar al-Baṣrī), was a Persian leading grammarian of Basra and author of the Third book on Arabic grammar. His famous unnamed work, referred to as Al-Kitāb, or "The Book", is a five-volume seminal discussion of the Arabic language.