He held the first rank among the literary men of that time, and devoted his attention principally to the study of the philology of the Arabic language, its singular terms and rare expressions. Of him Al-Mubarrad said: 'Abu Zaid was an abler grammarian than Al-Asmai and Abu Obaida, but these two came next to him, and were near to each other. Abu Obaida was the most accomplished scholar of the day.' Abu Zaid composed a number of useful philological works, and titles of thirty-one of them are given in the 'Fihrist.' He died A.D. 830, over ninety years of age.