Sa'd al-Din Masoud Taftazani (1322-1390), born in Khorasan- Iran. Was a Muslam Persian polymath. During his lifetime, he wrote treaties on gramar, rhetoric, logic, law, theology and the Quran exegesis. Also wrote a commentary of the Quran in Persian. Taftazani made contributions to Islamic jurisprudence, theology, linguistics, logic, literature and rhetoric. He has many valuable works in liguistics, theology, logic and rhetoric.