Dunash ha-Levi ben Labrat (920/925 – after 985) (; ) was a medieval Jewish commentator, poet, and grammarian of the Golden age of Jewish culture in Spain. He is known for his philological commentary, Teshuvot Dunash, and for his liturgical poems D'ror Yiqra and D'vai Haser. Life Dunash was, according to Moses ibn Ezra, born in Fes,<ref>David Goldstein, Hebrew Poems from Spain, Routledge & Kegan Paul 1965, p. 13</ref> the name Dunash being of Berber origin. In his youth he travelled to Baghdad to study with Saadia Gaon. On returning to Morocco he wrote many poems and became famous, and there were even poems written about him. He taught grammar and poetry. Hasdai ibn Shaprut, who lived in Córdoba, invited Dunash to Spain. Córdoba was then the center of culture and poetry in the Islamic world, and Hasdai endeavored to bring the best minds there. In Córdoba, Dunash met Menahem ben Saruq, also an important grammarian, though the two did not get along because of their many grammatical disputes as well as Menahem's tough criticism of Saadia Gaon, Dunash's mentor. Their dispute turned into personal rivalry, which included many polemic compositions and exchanges of accusations to Hasdai ibn Shaprut. Dunash died in Córdoba in 990. Work Dunash is called the founder of Andalusian Hebrew poetry. He first introduced Arabic meter into Hebrew poetry. Traditional Arabic poetry was built on patterns of long and short syllables. Dunash's innovation came in drawing a parallel between the šəwâ (ə) and ḥāṭēp̄ (ĕ/ă/ŏ) and the Arabic short vowels (i/a/u), so as to create a new Hebrew meter. This meter formed the basis for all subsequent medieval Hebrew poetry. At the time, however, it opened him up to severe criticism, particularly among the students of Menahem ben Saruq, that he was corrupting the Hebrew language by introducing Arabic forms, and changing traditional Biblical styles to conform to Arabic meter and rhyming schemes. For instance, in his classic poem D'ror Yikra, he begins the second line: Ne'im shim'chem ("pleasant [is] your name"), with a modified form of the adjective "pleasant," which properly should be na'im. This body of poetry includes the riddles of Dunash ben Labrat, among the first known Hebrew riddles. In the field of grammar, Dunash's major work was a book attacking Menahem ben Saruq and his Mahberet ("Notebook") for violating religious standards and opposing the teachings of the sages. He dedicated his work