Per the Roman Ritual.
INSTRUCTION FOR A PRIEST HAVING THE FACULTY OF CELEBRATING MASS TWICE OR THRICE ON THE SAME DAY
The following rules were issued by the C. S. R., and carried in “Ephemerides Liturgicae” 67 (1953) p. 39:
All priests who are to celebrate Mass twice or three times on the same day may consume the two ablutions prescribed by the rubrics of the Missal in each preceding Mass, but using only water, which, according to the new principle, does not break the fast.
A priest who celebrates three Masses without interruption on Christmas or All Souls is to follow the rubrics pertaining to the ablutions (see below).
Should a priest who is obliged to celebrate two or three Masses on the same day inadvertently take wine also, he is not prevented from celebrating the second and third Mass.
The following additional rule, over and above what is said in the preceding or subsequent decrees, was issued by the C. S. R. and carried in AAS 46 (1954) p. 71:
Instruction for a priest having the faculty of celebrating Mass twice or thrice on the same day:
Priests who are to celebrate a later Mass at a late hour, or after the heavy duties of their ministry, or after traveling a long distance may take some liquid nourishment, excluding alcohol, between Masses; but in this case they should abstain at least one hour before exercising the sacred ministry.
The following rules were issued by the C. S. R., and carried in
“Ephemerides Liturgicae” 75 (1961) pp. 438-439:
- A priest who celebrates two or three Masses without interruption (i.e… without leaving the altar) on Christmas or All Souls observes the following rules:
(a) In the first and second Mass, if another is to be celebrated immediately, after consuming the Precious Blood he does not purify or wipe the chalice, but places it on the corporal and covers it with the pall. Then with hands joined he says: “What I have received by mouth,” etc., and afterward cleanses his fingers in the finger-bowl, saying “Lord, may your body,” etc. and wipes them. Having done this he removes the pall from the chalice which is still resting on the corporal and covers the chalice as usual, namely with the purificator, the paten containing the host to be consecrated, the pall, and the veil. But the chalice is not to be taken off the corporal. If inadvertently he consumes wine in the ablutions, he may nevertheless celebrate a second and third Mass if necessary, without the customary three-hour interval. As for the rest Mass is concluded in the usual way.
(b) In the second and third Masses, if preceded immediately by the other Mass, having removed the veil at the offertory he moves the chalice slightly toward the epistle side but on the corporal; and after offering the host he does not wipe the chalice but lifts it slightly above the corporal, pours in wine and water, and without wiping it makes the offering of the chalice. All else follows as usual.
- A priest who celebrates several Masses without interruption should consume the two ablutions in the preceding Mass as prescribed by the rubrics. If the next Mass is to be celebrated before an interval of three hours, he takes water only in the ablutions. But if he inadvertently also consumes wine, he may nevertheless celebrate the next Mass if necessary, without the customary three-hour interval.
The following rule was issued by C.S.R.,
and carried in “Ephemerides Liturgicae” 78 (1964), p. 164: