John 13:7 YLT

⁵  afterward he putteth water into the basin, and began to wash the feet of his disciples, and to wipe with the towel with which he was being girded.

⁶  He cometh, therefore, unto Simon Peter, and that one saith to him, 'Sir, thou -- dost thou wash my feet?'

⁷  Jesus answered and said to him, 'That which I do thou hast not known now, but thou shalt know after these things;'

⁸  Peter saith to him, 'Thou mayest not wash my feet -- to the age.' Jesus answered him, 'If I may not wash thee, thou hast no part with me;'

⁹  Simon Peter saith to him, 'Sir, not my feet only, but also the hands and the head.'