Shiva Samhita is one of those rare treatises about which, as usual in Hinduism,we know very little.
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The authorship and date are unknown.
Some ascribe this to the Seventeenth Century.
Shiva Samhita talks about the complex physiology, names 84 different asanas (only four of which are described in detail), describes five specific types of prana, and provides techniques to regulate them.
It emphasizes that even a common householder can practice yoga and benefit from it.
The first chapter mentions various methods of liberation and philosophical standpoints.
The third chapter describes the winds in the body, the importance of the guru, the four stages of the Yoga, the five elemental visualizations and four asanas in detail.
The fourth chapter deals with the eleven mudras that can result in yogic attainments.
The fifth chapter is the longest and most diverse—it describes obstacles to the liberation, the four types of aspirants, the technique of shadow gazing, the internal sound, the esoteric centers and energies in the body (such as the kundalini), the seven lotuses, the “king of kings of yogas”, and a global mantra.