Congregation for Divine Worship and the Discipline of Sacraments
(On certain matters to be observed or to be avoided regarding the Most Holy Eucharist)
Chapter 3: The Proper Celebration of Mass
2. The Eucharistic Prayer
[51.] Only those Eucharistic Prayers are to be used which are found in the Roman Missal or are legitimately approved by the Apostolic See, and according to the manner and the terms set forth by it. “It is not to be tolerated that some Priests take upon themselves the right to compose their own Eucharistic Prayers” or to change the same texts approved by the Church, or to introduce others composed by private individuals.
[52.] The proclamation of the Eucharistic Prayer, which by its very nature is the climax of the whole celebration, is proper to the Priest by virtue of his Ordination. It is therefore an abuse to proffer it in such a way that some parts of the Eucharistic Prayer are recited by a Deacon, a lay minister, or by an individual member of the faithful, or by all members of the faithful together. The Eucharistic Prayer, then, is to be recited by the Priest alone in full.
[53.] While the Priest proclaims the Eucharistic Prayer “there should be no other prayers or singing, and the organ or other musical instruments should be silent”, except for the people’s acclamations that have been duly approved, as described below.
[54.] The people, however, are always involved actively and never merely passively: for they “silently join themselves with the Priest in faith, as well as in their interventions during the course of the Eucharistic Prayer as prescribed, namely in the responses in the Preface dialogue, the Sanctus, the acclamation after the consecration and the “Amen” after the final doxology, and in other acclamations approved by the Conference of Bishops with the recognitio of the Holy See”.
[55.] In some places there has existed an abuse by which the Priest breaks the host at the time of the consecration in the Holy Mass. This abuse is contrary to the tradition of the Church. It is reprobated and is to be corrected with haste.
[56.] The mention of the name of the Supreme Pontiff and the diocesan Bishop in the Eucharistic Prayer is not to be omitted, since this is a most ancient tradition to be maintained, and a manifestation of ecclesial communion. For “the coming together of the eucharistic community is at the same time a joining in union with its own Bishop and with the Roman Pontiff”.