Obey rules and regulations in order to avoid any negative consequences or punishments; understand the importance of following instructions given by authorities; face punishment for disobeying rules .

This hadith is about the consequences of disobeying rules. It narrates an incident between Al-Hajjaj and Ibn 'Umar, where Al-Hajjaj asked Ibn 'Umar how he was and he replied that the person who allowed arms to be carried on a day when it was forbidden to do so, wounded him. This implies that those who disobey rules will face punishment for their actions. It teaches us that we should always obey rules and regulations in order to avoid any negative consequences or punishments. We should also understand the importance of following instructions given by authorities as they are there for our own safety and well being.