Council of Trent: Session XXI, Communion, Reservation of the Chalice Question

ON COMMUNION UNDER BOTH SPECIES, AND ON THE COMMUNION OF INFANTS

As regards, however, those two articles, proposed on another occasion, but which have not as yet been discussed; to wit, whether the reasons by which the holy Catholic Church was led to communicate, under the one species of bread only, laymen, and also priests when not celebrating, are in such wise to be adhered to, as that on no account is the use of the chalice to be allowed to any one soever; and, whether, in case that, for reasons beseeming and consonant with Christian charity, it appears that the use of the chalice is to be granted to any nation or kingdom, it is to be conceded under certain conditions ; and what are those conditions: this same holy Synod reserves the same to another time,--for the earliest opportunity that shall present itself,--to be examined and defined.

Translation: J. Waterworth, The Canons and Decrees of the Council of Trent (1848), Hanover Historical Texts Project transcription (1995).