Thirty Minor Upanishads
Chapters
Thirty Minor Upanishads: 27. Varāha-Upanishaḍ ...

many times in small quantities proper and moderate food. He should practise Manṭrayoga, 1 Layayoga and Hathayoga, through mild, middling and transcendental methods (or periods) respectively. Laya, Manṭra, and Hathayogas have each (the same) eight subservients. They are yama, niyama, āsana, prāṇāyāma, praṭyāhāra, (Parana, ḍhyāna, and samāḍhi. 2 (Of these), yama is of ten kinds. They are non-injury, truth, non-coveting, continence, compassion, straightforwardness, patience, courage, moderate eating, and purity (bodily and mental). Niyama is of ten kinds. They are ṭapas (religious austerities), contentment, belief in the existence of God or Veḍas, charity, worship of Īśvara (or God), listening to the exposition of religious doctrines, modesty, a (good) intellect, japa (muttering of prayers), and vraṭa (religious observances). There are eleven postures beginning with chakra. Chakra, paḍma, karma, mayūra, kukkuta, vīra, svasṭika, bhaḍra, simha, mukṭa, and gomukha, are the postures enumerated by the knowers of yoga. Placing the left ankle on the right thigh and the right ankle on the left thigh, and keeping the body erect (while sitting) is the posture "Chakra". Prāṇāyāma should be practised again and again in the following order, viz., inspiration, restraint of breath and expiration. The prāṇāyāma is done through the nādis (nerves). Hence it is called the nādis themselves.

"The body of every sentient being is ninety-six digits long. In the middle of the body, two digits above the anus and two digits below the sexual organ, is the centre of the body (called Mūlāḍhāra or sacral plexus). Nine digits above the genitals, there is kanḍa of nādis which revolves oval-shaped, four digits high and four digits broad. It is surrounded by fat, flesh, bone, and blood. In it, is situate a nādī-chakra (wheel of nerves) having twelve spokes. Kuṇdalī by which this body is supported is there. It is covering by its face the Brahmaranḍhra (viz., Brahma's hole) of Sushumnā. (By the side) of Sushumnā dwell the nādis