Chapter 18 — Part II: The Sacraments — The Holy Eucharist
Section 150. Who Are Obliged By The Law Of Communion — But although this law, sanctioned by the authority of God and of His Church, concerns all the faithful, it should be taught that it does not extend to those who on account of their tender age have not attained the use of reason. For these are not able to distinguish the Holy Eucharist from common and ordinary bread and cannot bring with them to this Sacrament piety and devotion. Furthermore (to extend the precept to them) would appear inconsistent with the ordinance of our Lord, for He said: Take and eat words which cannot apply to infants, who are evidently incapable of taking and eating.