sentences:  The top floor accommodated two prayer rooms, one for the Chasidim, who use Nusach Sefard, and one for the Perushim, who use Nusach Ashkenaz.The building also contained a mikvah.Although the riots of 1920 and 1929 disturbed the running of the yeshiva and synagogue, Jews still frequented the building until Arab violence forced them to vacate the premises during the 1938 riots.