ASK 182

In this clip Dr Israr Ahmed explains that a Rasool (Messenger) brings a new divine law, while a Nabi (Prophet) follows an existing one. Every Rasool is a Nabi, but not every Nabi is a Rasool. He also mentions that some prophets, like Hazrat Haroon, were called Rasools even without bringing a new book. A Rasool guides a specific people, and if they reject the message, they face punishment, as seen in the stories of past nations.