Ancient Epitome of Canon XIX.
After the prayers of the catechumens shall be said those of the Penitents, and afterwards those of the faithful. And after the peace, or embrace, has been given, the offering shall be made. Only priests shall enter the sanctuary and make there their communion.
The Greek commentators throw but little if any light upon this canon. A question has been raised as to who said the prayers mentioned. Van Espen, following Isidore's translation "they also pray who are doing penance," thinks the prayer of the penitents, said by themselves, is intended, and not the prayer said by the Bishop. But Hefele, following Dionysius's version -- "the prayers over the catechumens," "over those who are doing penance" -- thinks that the liturgical prayers are intended, which after the sermon were wont to be said "over" the different classes. Dionysius does not say "over" the faithful, but describes them as "the prayers of the faithful," which Hefele thinks means that the faithful joined in reciting them.