 We have only a few scant clues of his biography, and we cannot be sure of their veracity, especially in the issue of the date of his death. We know that he lived the first half of his life in Egypt, before moving to Karouan, Tunisia between the years of 905–907. Most biographers agree that he lived to the age of 100, though they disagree on the years of birth and death. Sacid al-Andalusi (mid-11th century), in his work Kitab Tabakat al-Umam, indicates that he died in 932 (R. Blachere 1935, p. 157). However, one of Israeli’s pupils, Ibn al-Jazzar died in 1009 at an approximate age of 80. If Israeli had died in 932, Ibn al-Jazzar would have been only five years old at his death, thus this date is unlikely. Abraham Ibn Hasday, a translator of Israeli’s works from Arabic into Hebrew, provides the date of his passing as 942. But Altmann and Stern (Isaac Israeli, p. xx) have pointed out that Ibn Hasday likely made a transcription error in his quotation of Sacid al-Andalusi. Another student of Israeli, Dunash Ibn Tamim, wrote a commentary on the Jewish mystical work Sefer Yetzirah in 956, and indicated therein that Israeli was no longer alive, though not mentioning the year of his death.