As his reign became more secure, Reza Shah clashed with Iran's clergy and devout Muslims on many issues. In March 1928, he violated the sanctuary of Qom's Fatima al-Masumeh Shrine to beat a cleric who had angrily admonished Reza Shah's wife for temporarily exposing her face a day earlier while on pilgrimage to Qom. In December of that year he instituted a law requiring everyone (except Shia jurisconsults who had passed a special qualifying examination) to wear Western clothes. This angered devout Muslims because it included a hat with a brim which prevented the devout from touching their foreheads on the ground during salat as required by Islamic law. The Shah also encouraged women to discard hijab. He announced that female teachers could no longer come to school with head coverings. One of his daughters reviewed a girls' athletic event with an uncovered head.