It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) once said to me, "Make me perform ablution." So I brought water for ablution. The Noble Prophet (peace and blessings be upon him) first performed istinja, then put his hands in the soil and rubbed soil on them, then washed them, then performed complete ablution, and at the end wiped over his leather socks (khuffs). I submitted, "O Messenger of Allah, you did not wash your feet?" He replied, "I put on these socks while in a state of ablution."