Title: Khilāf al-Akhfash al-Awsaṭ ʻan Sībawayh min khilāl shurūḥ al-Kitāb ḥattá nihāyat al-qarn al-rābiʻ al-Hijrī
Subjects: Arabic language, Grammar
People: Saʻīd ibn Masʻadah Akhfash al-Awsaṭ (-approximately 830), Sībawayh, ʻAmr ibn ʻUthmān (active 8th century)