Uphold justice and not let any wrongdoers go unpunished

This hadith is about the importance of justice and retribution. It tells us that when someone commits an act of injustice, such as killing an innocent person, they must be held accountable and punished accordingly. In this case, the Prophet Muhammad took it upon himself to ensure justice was served by killing the murderer in retaliation for his crime. This hadith teaches us that we must always strive to uphold justice and not let any wrongdoers go unpunished. We should also remember that even if we are not able to take action ourselves, Allah will always ensure that justice is served in His own way.