Chapter 22 — Part II: The Sacraments — Matrimony
Section 66. But as every blessing is to be obtained from God by holy prayer, the faithful are also to be taught sometimes to abstain from the marriage debt, in order to devote themselves to prayer. Let the faithful understand that (this religious continence), according to the proper and holy injunction of our predecessors, is particularly to be observed for at least three days before Communion, and oftener during the solemn fast of Lent.