Grammar historians did not mention the books of tafsir from its sources, although some of them contain many grammatical rulings, terminology and controversies, especially old books, such as Tafsir al-Tabari - (Jami al-Bayan fi Tafsir al-Quran) which we chose as a material for our study, and I was alerted to that while I was working In the investigation of the book (Al-Qit` wa al-Iitaf by Abu Ja`far al-Nahhas who died in the year 338 AH), as he used to transmit many rulings from him in many places in grammar, and he cited many evidence of poetry from it, and when I settled on these places, it appeared to me that the book is rich in this, and that it should not be neglected Grammar students, especially the Kufic doctrine, because after studying it, I decided that it may be an important source from their sources, because it contains many of their opinions and terminology, and mentioned many methods of their discussions and arguments in addition to the fact that it contains about seventy controversial issues, in which the arguments of scholars are mentioned The two doctrines, and that the book was famous and known by people, and they preferred it over many books, at the time of fox and cold, it came in the novel by Yaqoot on the authority of Abu Bakr bin Kamel Tal: I dictate to us the book of interpretation a hundred and fifty verses, then it came out to the end of the Quran, so he read it to us and that is Sunnah (Sunnah) 20) and the book became popular with Wart He mentioned it, Abu al-Abbas Ahmad bin Yahya Thaleb, and Abu al-Abbas Muhammad bin Yazid al-Mabrad are alive, and the people of the Arabs and al-Ma'ani had two strongholds, and at the time there were others, such as Abu Jaafar al-Rostami, my two sons, al-Hasan bin Kisan, al-Mufaddal bin Salamah, al-Jaad and Abu Ishaq al-Zajaj, and others from Grammarians are among the knights of this tongue, and this book was carried bright and estranged, and it was read by everyone who was among the scholars in his time, and all his bounty and offering. And even if the book is specific to the interpretation of the Quran - as we said - it includes many sciences, including Arabic sciences in terms of language, morphology and grammar, and it was unique from other books of tafsir in that it used to mention the verse and mention the interpretation in it. From the expressions and differences of extrapolation of the opinions of the grammarians: Basrien and Kufin, and the reasons for each of them, then corrected and favored. The disagreement that the scholars compiled in his time, nothing of which has reached us, which makes this book a great value in studying the history of those differences, and it reveals many of the foundations on which the Kufic school was built.