Sayyidah Maymunah (may Allah be pleased with her) mentioned the ritual bath (ghusl) of the Prophet (peace and blessings be upon him) and said that when he (peace and blessings be upon him) had finished, he moved aside and washed his feet. I gave him (peace and blessings be upon him) a cloth, but he (peace and blessings be upon him) declined it; he (peace and blessings be upon him) was wiping the water off with his hand.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1119