As a consequence of the calumnies of their antagonists Hai and his father were imprisoned together, and their property was confiscated, by the caliph al-Qadir in 997. The imprisonment was brief, but shortly thereafter (in 998) the aged and infirm Sherira appointed his son to the position of gaon. Hai's installation was greeted with great enthusiasm by the Jewish population. An old tradition says that on the Sabbath after Sherira's death, at the end of the reading of the weekly lesson, the passage in which Moses asks for an able follower was read in honor of Hai. Thereupon, as haftarah, the story of Solomon's accession to the throne was read, the last verse being modified as follows: "And Hai sat on the throne of Sherira his father, and his government was firmly established." Hai remained g