In Sîbeveyhi's el-Kitâb, his teacher Halîl b. the place of Ahmed el-Ferâhîdî

Sîbevayhi's al-Kitâb has reached a position that no other work has reached among grammar books. In light of the observed information, this work is the main source for any study to be carried out in the field of the Arabic language. This work, which was written towards the end of the second century Hijri, has become the most reliable and reliable source for reaching grammatical rules. This work has an important place in the science of grammar reaching this stage since Ebü'l-Esved ed-Düelî (d. 69/688), who is considered the founder of the science of grammar. It is the most important source preferred among today's grammar books. It is the first book that recorded all the grammar rules. The linguists who came after him did not produce additional rules, but only expressed the existing rules and Sîbeveyhi's views. All of the works written in the recent period were written on the arrangement of the science of grammar, the order of the subjects, and the explanation of closed issues. While the linguists in the Sîbeveyhi period were working on the commentary, procedure, and method of the work, some of the scholars who came after his period mentioned the rules in the work as they are in their works; Some have also written works on the justifications of the rules and the cause-effect relationship. In the light of the examinations made on this important work, the origins of the science of grammar were traced in Sîbeveyhi's al-Kitâb, an effort was made to collect as much information as possible and that information was discussed in our study. For this, analytical and scientific methods were used. More studies are still needed to explore various aspects of this work. This deficiency can be filled with grammar, linguistics, and modern studies. The studies to be carried out will enable researchers to benefit from Sibeveyhi's work for centuries. Keywords: Arap Dili, Nahiv, al-Kitâb, Sîbeveyhi, Halîl.