ONE OF THE MANIFESTATIONS OF LINGUISTIC PLANNING IN THE ARAB HERITAGE FROM THE CALIPHATE OF UMAR IBN AL-KHATTABUNTIL THE CALIPHATE OF AL-MA’MUN IBN HARUN AL-RASHID (13 AH to 218 AH). Al Qasimia University Journal of Arabic Language and Literature, v. 1, n. 1, p. 159–198, 29 Dec.2022.