This Paper aims to analyse and discuss one of the issues that have preoccupied Muslim philosophers, chief among them Ibn Rashid, who has devoted particular attention to the grammatical lesson. It is meant to be common to all tongues and to achieve the most scientific and objective, and Ibn Rashid wanted to make it a welcome space to legalize and arrange language according to scientific criteria, which would make it easier to treat it as a science that transcends all differences and geographical boundaries. How did Ibn Roshd find the grammatical lesson before him? And what are the details of his regenerative project?
In order to deal with this problem, we first followed the features of the grammatical lesson in Andalusia and all the changes that he had learned. We then turned to the efforts of Ibn Hazm Al-Zahiri and Ibn Madhaa in resurrecting and reviving this lesson. "Necessary in the grammar" as combining his two arguments with the new vision adopted by the philosopher of Córdoba for the development of this science and its openness to other cognitive fields.
Keywords: Renewal ; Ibn Roshd ; Arabic Grammar ; Grammar Divisions ; Factor’s Theory.