according to al-kindi, abd al-aziz introduced an islamic ritual in egypt consisting of a sitting held in the mosques during afternoon prayers on the ninth day of dhu al-hijjah, the day of arafa. abd al-aziz opposed a higher tax burden on indigenous muslim converts. he had been called on by abd al-malik to follow the example of the caliph's governor of iraq and the eastern caliphate, al-hajjaj ibn yusuf, who imposed the poll tax ("jizya") on the inhabitants of his province even after their conversion to islam. instead, abd al-aziz took the advice of the "qadi" (chief islamic judge) and treasurer of egypt, abd al-rahman ibn hubayra, and did not implement the measure.