Chapter 19 — Part II: The Sacraments — Penance
Section 110. Sins Forgotten — But should the confession seem defective, either because the penitent forgot some grievous sins, or because, although intent on confessing all his sins, he did not examine the recesses of his conscience with sufficient accuracy, he is not bound to repeat his confession. It will be sufficient, when he recollects the sins which he had forgotten, to confess them to a priest on a future occasion.