[De horis canonicis]

...recited through Zabarella.

I ask, since in our third [section] mention is made there in the word "into," etc., and so it is seen to feel that he had already celebrated another Mass on the same day; whether this is true? It is answered that no, regularly, because as Augustine says, "Happy is he who is able to celebrate one Mass in a day," in the chapter Te referentem, on the celebration of the Mass, and "To celebrate daily I neither praise nor vituperate," says the same Augustine, and in the chapter Quottidie, on consecration, distinction 1.

Nevertheless, there are certain cases of necessity in which it is permitted for a priest to celebrate two Masses in a day, which the final gloss sets forth in the chapter Consuluisti, on the celebration of the Mass, as for example, in the case of the sick occurring, as our text says, or when someone dies after he has celebrated, or there is a cause of utility or honesty, as if at the said Mass a great person arrives who wishes to hear Mass, by the argument of our chapter and the following chapter, and on the day of the Nativity of the Lord, as in the said chapter Consuluisti; otherwise it suffices to celebrate one Mass in a day, as in the said chapter Te referente. However, because it is not expressly prohibited when a priest can celebrate more, therefore what is said in the said chapter Consuluisti, there, "It suffices for a priest to celebrate one Mass once in a day only," etc.

The gloss placed on the word "necessity" in the said chapter Consuluisti says he will be able to celebrate more, namely one Mass of the day and another for the dead, and as often as he celebrates, so often let him receive his body of Christ and blood, on consecration, distinction 2, Operimus.

And note that if a priest ought to celebrate another Mass, he ought not to consume the wine with which he washed his fingers, because then by consuming the wine of ablution he could not celebrate another Mass on the same day, as the text says in the chapter Ex parte, on the celebration of the Mass. And the reason is because he would not be fasting. And also, he who cannot drink wine can be removed; see about this in the chapter Ipsi apostoli, 9, question 7.

Say briefly that no, as the large gloss notes around the middle of itself in the said chapter Ipsi apostoli, that it behooves him to communicate and therefore he ought to drink wine, as in the chapter Episcopo, God, on consecration, distinction 1, and in the chapter Pacta, on consecration, distinction 2. I would praise that the priest, where necessity and the cases named above are not [present], should beware that he does not celebrate more Masses in a day.

Nor does it object that in the said chapter Consuluisti...