In the generations that followed the conquest, Muslim rulers promulgated new statutes clearly disadvantageous to dhimmi. The construction of new churches and the sounding of church bells were eventually forbidden. But when Eulogius of Córdoba recorded the martyrology of the Martyrs of Córdoba during the decade after 850, it was apparent that at least four Christian basilicas remained in the city, including the church of Saint Acisclus that had sheltered the only holdouts in 711, and nine monasteries and convents in the city and its environs; nevertheless, their existence soon became precarious.