Deep in the Bosnian mountains lies the village of Prusac, an Islamic pilgrimage site. Thousands of pilgrims gather every year to commemorate a medieval miracle. Jan Leyers learns how Islam is governed and organized in Bosnia. The hierarchical way in which this happens appears to be one of the secrets of moderate Bosnian Islam. Back in Sarajevo, Leyers meets Bosnia's former Grand Mufti, Mustafa Cerić, who has valuable advice for European policymakers and Muslim immigrants.