Roman Catechism 28.19

Chapter 28 — Part III: The Decalogue — The Fifth Commandment

Section 19. Our Lord has left us many other lessons of instruction with regard to the perfect observance of this law, such as Not to resist evil; but if one strike thee on thy right cheek, turn to him also the other. And if a man will contend with thee in judgment, and take away thy coat, let go thy cloak also unto him; and whosoever will force thee one mile, go with him two.