Origen
Catena Aurea · Johannesevangelium 13
Then cometh he to Simon Peter: and Peter said unto him, Lord, dost thou wash my feet? Jesus answered and said unto him, What I do thou knowest not now; but thou shalt know hereafter. Peter saith unto him, Thou shalt never wash my feet. Jesus answered him, If I wash thee not, thou hast no part with me. Simon Peter saith unto him, Lord, not my feet only, but also my hands and my head. Jesus saith to him, He that is washed needeth not save to wash his feet, but is clean every whit: and ye are clean, but not all. For he knew who should betray him; therefore said he, Ye are not all clean. Jesus answered and said unto him, What I do thou knowest not now; but thou shalt know hereafter.
Jesus was unwilling to wash hands, and despised what was said of Him in this respect: Thy disciples wash not their hands when they eat bread. (Matt. 15:2) And He did not wish the head to be submerged, in which was apparent the image and glory of the Father; it was enough for Him that the feet were given Him to wash: Jesus answered and said, He that is washed needeth not save to wash his feet, but is clean every whit: and ye are clean, but not all.