Masdar

Masdar refers to “The Very Idea of Something” or “The True Essence of Something”.

When used as a quality, it refers to the ultimate form of something, or the embodiment of something

   (i)   When you want to say something is ultimately fast, instead of calling it fast or speedy, you call it “Speed” itself. Speed is a Masdar, therefore the usage of “I am Speed” = I am the embodiment of fast itself

   (ii)   When you call someone good at basketball as “He is Basketball”, it is as though you are saying if you look for the definition of basketball in the dictionary, you will find his face there instead. When you think of basketball, you automatically think of him. He is the ultimate definition of basketball.

For Allah, when His quality is a Masdar, it indicates that He is the ultimate embodiment of that quality. This is another type of hyperbole used to describe His Asma’ul Husna.