Tato ‘nimaadi-praadur-bhaavah kaaya-sampat tad-dharmaanabhighaatash ca
From that (constraint on the elements), there results the manifestation of powers such as becoming minute, etc… perfection of the body, and non-affliction by its constituents.
Every form and phenomenon is a reflection of the interactions, combinations and permutations of the five elements. Constraint implies or leads to control hence constraints on the elements will imply or lead to the control of an aspect or aspects of an element or elements. Therefore constraint affords control which leads to the apparent manifestation of powers as mind controls energy and energy controls matter.
The main powers or Siddhis are eight in number and as follow:
Anima—the power to become as minute as an atom
Mahiman—the power to become as large as the universe
Laghiman—the power to become as light as cotton
Praapti—the power to reach any object anywhere
Praakaamya—the power to fulfil any desire
Vashitva—the power to control creation
Ishitrva—the power of creation and to rule over it
Kaamaavasaayitva—the power of Supreme Bliss due to complete mastery over Maya
The manifestation of these powers occur in the subtle body of the Yogi, the interface between the psyche and matter. From mastery of the elements, the Yogi also attains perfection of the body and is non-afflicted by (immune from) the play of their interactions.
The goal of Yoga is to realize the Self Within and not to aggrandize the ego. The Siddhis should only be seen as ‘side-effects’ of a controlled and focused mind, and not sought. Instead look at the concepts of the Siddhis as the ennoblement of character, such as:
Anima as humility, becoming as minute as a sub-atomic particle
Mahiman as the largess of the heart encompassing the whole of the Universe and its creatures
Laghiman as ‘lightness’ of the spirit generating faith, hope and courage
Praapti as the ability to reach anyone anywhere to uplift
Praakaamya being the overconsuming desire for Self-realization
Vashitva as mastery of self, the ability to control our ego
Ishitrva as the ability to consciously choose by design (and not default) and hence control and take full responsibility for our thoughts, emotions and actions
Kaamaavasaayitva as service to the whole creation being our highest wish fulfilment , serving the Divine in self and others becoming the highest bliss in thoughts, sentiments and actions.