John 13:4-5

13:4 he got up from the meal, removed his outer clothes, took a towel and tied it around himself. 13:5 He poured water into the washbasin and began to wash the disciples’ feet and to dry them with the towel he had wrapped around himself.

John 13:14-15

13:14 If I then, your Lord and Teacher, have washed your feet, you too ought to wash one another’s feet. 13:15 For I have given you an example – you should do just as I have done for you.