Abu Hayyan al-Andalusi's (d.745AH) methodological rules in grammar lessons, the term (correct) in his book Al-Tadheel wa Al-Takmeel as a model, an analytical study

This research aims to identify the methodology adopted by Abu Hayyan al-Andalusi in his book "Al-Tadhiyal wa al-Takmil" for correction, through a descriptive and analytical study that traces the mechanisms of correction and weighting in his treatment of grammatical issues, and the extent of his adherence to the methodological controls he set for himself. The research begins with an introduction explaining the importance of the research, its problems and objectives, and previous studies, followed by a preface on the importance of judgmental terms in Arabic grammar. The first section focuses on defining the concepts of "correct" and 'weighting' in grammatical studies and the multiple views of grammarians on this subject. The second section examines the nature of "Al-Tadhil wa al-Takmil", its method, and the tools of investigation and correction in it, while the third section studies the methodology of correction followed by Abu Hayyan in the appendix and supplement. The research concludes with a presentation of the results and recommendations, the most important of which is that Abu Hayyan presented a unique model of grammatical correction, combining accuracy of presentation, refutation of statements, and giving preference to the most likely based on an analysis that combines text and context, rules and usage. I recommend that my fellow researchers pay attention to the philosophy of language in encyclopedic commentaries and include issues of correction in university curricula, given their analytical depth, which enhances the methodological awareness of researchers.