What did Prophet Muhammad (peace be upon him) preach to the women when he went out while Bilal was accompanying him?
      Narrated Ibn 'Abbas:                          Once Allah's Apostle came out while Bilal was accompanying him. He      went towards the women thinking that they had not heard him (i.e. his      sermon). So he preached them and ordered them to pay alms. (Hearing      that) the women started giving alms; some donated their ear-rings,      some gave their rings and Bilal was collecting them in the corner of      his garment.