Respect other Muslims & do not call them names such as "kafirs" or "unbelievers".

This hadith is about the importance of respecting other Muslims and not calling them kafirs. The Prophet Muhammad (PBUH) warned against this behavior and said that if someone calls another person a kafir then it is true about one of them. This means that if someone calls another person a kafir then they are essentially saying that they themselves are also not believers in Islam. Therefore, it is important to respect other Muslims and not call them names such as “kafirs” or “unbelievers” as this could be seen as an insult to their faith and beliefs. It is also important to remember that everyone has the right to practice their own religion without being judged or insulted by others for doing so.