John 13:8-10 NIV

8 “No,” said Peter, “you shall never wash my feet.” Jesus answered, “Unless I wash you, you have no part with me.”
9 “Then, Lord,” Simon Peter replied, “not just my feet but my hands and my head as well!”
10 Jesus answered, “Those who have had a bath need only to wash their feet; their whole body is clean. And you are clean, though not every one of you.”

References for John 13:10