Al-Ṭuwāl
Al-Ṭuwāl the Grammarian, surnamed Abū ‘Abd Allāh, or Muḥammad ibn Aḥmad ibn ‘Abd Allāh. Al-Ṭuwal the Grammarian was a ninth-century philologist of the School of Kūfah.Life
He was a disciple of al-Kisā’ī and attended the lectures of al-Aṣma’ī. He moved to Baghdād where Abū 'Umar al-Durī al-Muqrī was his disciple. Abū al-Abbās Tha’lab said he was a skillful analysist of Arabic grammar. No books of his are known. He died in 857-858.
