Isaac ben Judah ibn Ghayyat[a] (1030/1038–1089), commonly mispronounced ibn Ghiyyat, was a rabbi, Biblical commentator, codifier of Jewish law, philosopher, and liturgical poet from al-Andalus. He was born and lived in the town of Lucena in the Taifa of Granada, where he headed a rabbinic academy. He died in Cordoba.
- ^ Steinschneider, Moritz (1860). Catalogus librorum hebraeorum in bibliotheca Bodleiana (in Latin). typis A. Friedlaender. pp. 1110–1111.
- ^ Steinschneider, Moritz (1901). An Introduction to the Arabic Literature of the Jews. pp. 515–516.
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