Ibn Jinni (d. 392 AH) wrote his book (Al-Luma fi al-Arabiya) on grammar. To be a body for the students of this art to study with their sheikhs, and he made it into (66) chapters, including (61) chapters on grammar, and five chapters on morphology, namely: the chapter on plural fractions, the chapter on descent, the chapter on diminutiveness, the chapter on adverbs of severance, the chapters on conjunction, and the chapter on tilting, and when it is presented. For the subject, he suffices to mention the rule and cites evidence for it from the Quran and poetry, as for the hadith of the Prophet, he did not cite it at all, and he may suffice with prosaic examples, and he does not mention grammatical ills, nor the differences of grammarians in a single issue, so you do not find in his book, for example, a mention of the name of one of the grammarians, nor the group of Basrans Or the Kufans, as he drives the rule on the most correct doctrine of the Basrans and does not attribute that to them, and what indicates that the book was prepared to be a body for students of this art to read to their sheikhs is the large number of its explanations, which reached (19) explanations.