3 Principles in Avesta

Nature has in her working Mithra, i.e. the plan of the creation and its redemption (planning power); Maanthra, i.e., the basic foundation of the plan and its fulfillment (shifting and arranging power); and Yasna, i.e., the creation of the Universe according to the above plan, and its motion and manifestation in all its diverse aspects (moving and erecting power).