The Yoga-system of Patañjali

Or, The Ancient Hindu Doctrine of Concentration of Mind, Embracing the Mnemonic Rules, Called Yoga-sūtras of Patañjali and the Comment, Called Yoga-bhāshya, Attributed to Veda-Vyāsa and the Explanation, Called Tattva-vāiçāradī, of Vāchaspati-Miçra

Patañjali