Be mindful of your actions during states of ritual impurity; Return greetings once you have purified yourself according to Islamic law; Show respect for others by returning their greetings once you have purified yourself.

This hadith teaches us about proper etiquette when it comes to greeting someone who is in a state of ritual impurity. In this case, it was narrated that a man passed by the Prophet while he was urinating and greeted him with salam, but the Prophet did not return his greeting until after he had finished and performed dry ablution or tayammum. This shows us that we should be mindful of our actions when we are in a state of ritual impurity and refrain from returning greetings until we have purified ourselves according to Islamic law. It also teaches us that even though we may be in an unclean state, it is still important to show respect for others by returning their greetings once we have purified ourselves.