Yoga Sutras of Patanjali translated by Yogi Kalinath - Chapter 3, Verse 45
Pada 3, Sutra 45
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.