225. If anyone abuses you to your face, strikes you with their fist, throws clods of earth at you, beats you with a stick or gives you a blow with a sword, you must put aside all worldly desires and considerations and train yourself thinking: ‘My heart will be unwavering. No evil words shall I speak. I will live with compassion and for the good of others, with a kindly heart, without resentment.’ This is how you must train yourself.
M.I,124 (MN 21)