ABU ISḤAḲ AL-ELVIRI:
Mohammedan poet; lived in Spain toward the middle of the eleventh century. In one of his poems he attacked Jews in general, and in particular Joseph ibn Nagrela, whom Badis, king of the Berbers, had appointed vizier. Abu Isḥaḳ's inflammatory verses hastened, if they did not directly cause, the assassination of Joseph ibn Nagrela.
- Grätz, Gesch. d. Juden, vi. 58;
- Munk, Notice sur Aboulwalid, pp. 102 et seq.