Aqida

With the exception of Almighty Allah's Being and Attributes (such as Allah being Most Merciful, The Sustainer etc) everything else is "Haadis" meaning that it did not exist, and only came into existence after Almighty Allah created them.

This means that with the exception of Allah's Being and His Attributes, everything else is a creation. In other words the Angels, Prophets, Jins, humans and everything else in the universe only came into existence after being created by Allah, so they are all known as "Creation". In other words, all creation came into existence through Allah's command.