''Kutub al-Lughah'' is a work of
Hebrew
Hebrew (; ; ) is a Northwest Semitic language of the Afroasiatic language family. Historically, it is one of the spoken languages of the Israelites and their longest-surviving descendants, the Jews and Samaritans. It was largely preserved ...
linguistics
Linguistics is the science, scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure ...
by
Saadia Gaon
Saʻadiah ben Yosef Gaon ( ar, سعيد بن يوسف الفيومي ''Saʻīd bin Yūsuf al-Fayyūmi''; he, סַעֲדְיָה בֶּן יוֹסֵף אַלְפַיּוּמִי גָּאוֹן ''Saʿăḏyāh ben Yōsēf al-Fayyūmī Gāʾōn''; ...
, twelve "Books on Language" which are also designated as the twelve parts of a work entitled "The Book on Language", in which, as the author himself states in his "''Sefer ha-Galui''", he sought to explain the "i'rab", or the grammatical formation of the Hebrew language. Of this Hebrew grammar, which is the oldest one known, fragments of greater or less extent have been preserved, especially in Saadia's commentary on
Sefer Yetzirah and by
Dunash ben Labrat.
Linguistics books
Hebrew language
{{Lang-book-stub