Sayyidah Aisha (may Allah be pleased with her) narrates: When the Prophet Muhammad (peace and blessings be upon him) performed ablution, he would pass his fingers between (the toes of) his feet and would rub his heels, and he used to say: "Pass your fingers between your toes, Allah the Exalted will not let fire enter between them, and destruction of the heels is in Hellfire for some."