The Five Elements  (Panchamahabhuta Siddhanta).

The three Gunas or impulses, give rise to the 5 Tanmantras and Panchamahabhutas, Sense organs and organs of Action, 3 Doshas and each of their 5 subdoshas. They are associated with the 20 attributes contained within the elements which can be felt in the pulse as the 15 subdoshas.

Ayurveda believes that everything in this universe is made of five great elements or building blocks and these elements are earth, water, fire, air & ether.