Roman Catechism 17.27

Chapter 17 — Part II: The Sacraments — Confirmation

Section 27. The Subject of Confirmation — It often happens that, in receiving this Sacrament, the faithful are guilty of either precipitate haste or a gross neglect and delay; concerning those who have become so impious as to have the hardihood to contemn and despise it, we have nothing to say. Pastors, therefore, should also explain who may receive Confirmation, and what should be their age and dispositions.