What did Prophet Muhammad (peace be upon him) advise us to do to save our heels from the fire?
 Narrated `Abdullah bin `Amr:                     The Prophet remained behind us on a journey. He joined us while we were performing ablution for the `Asr prayer which was overdue and we were just passing wet hands over our feet (not washing them thoroughly) so he addressed us in a loud voice saying twice , "Save your heels from the fire."