 This was followed by a massacre of Jews throughout the empire—in Egypt, aided by the Copts, who had old scores to settle with the Jews, dating from the Persian conquest of Alexandria at the time of Byzantine Emperor Anastasius I (502) and of the Persian general Shahin (617), when the Jews assisted the conquerors in fighting against the Christians.The mad caliph Al-Ḥakim (996-1020) vigorously applied the Pact of Omar, and compelled the Jews to wear bells and to carry in public the wooden image of a calf.A street in the city, Al-Jaudariyyah, was inhabited by Jews.