Analysis of information sources in references of the Wikipedia article "Lava-pés" in Portuguese language version.
Maundy Thursday (or le mandé; Thursday of the Mandatum, Latin, commandment). The name is taken from the first few words sung at the ceremony of the washing of the feet, "I give you a new commandment" (John 13:34); also from the commandment of Christ that we should imitate His loving humility in the washing of the feet (John 13:14–17). The term mandatum (maundy), therefore, was applied to the rite of foot-washing on this day.