Streszczenie:
The article presents a brief history of the formation of the rite of Washing of the Feet, which is called mandatum in the Roman liturgy. It analyses and interprets the text of the decree In Missa in Cena Domini, in which the Congregation for Divine Worship and the Discipline of the Sacraments has changed some elements of the celebration of the rite mentioned above. The article also outlines the theological aspects of the mandatum for the theological significance of the rite can become an inspiration to instruct the faithful, aimed at a fuller experience of the liturgy of the Mass of the Lord’s Supper.