Be mindful of your words when around others; maintain good manners in all aspects of life; strive to be an example for yourself and others; compliment rather than criticize someone's work/food.

This hadith teaches us that the Prophet Muhammad, peace be upon him, was a model of good manners and etiquette. He never criticized any food that was presented to him, even if he did not like it. Instead of criticizing the food, he would simply leave it without saying anything negative about it. This teaches us to be mindful of our words when we are around others and to refrain from speaking ill of something that someone else has prepared for us. We should also strive to maintain good manners in all aspects of our lives so that we can be an example for others as well as ourselves.