What is Niyama?
Niyama is Sanskrit for observance. In Patañjali's Yoga Sūtras (compiled in the early centuries CE), it names the second of the eight limbs of classical yoga: five inner commitments the practitioner holds toward herself. Together with the five outward yamas, the niyamas form the ethical and dispositional foundation on which the rest of the path rests.
The five observances
Śauca (cleanness) is the most concrete of the five and the easiest to misread as merely external hygiene. Classical commentaries (the Yoga-Bhāṣya attributed to Vyāsa and the Tattva-Vaiśāradī of Vācaspati Miśra) describe it as having an outer face (bodily and environmental cleanliness) and an inner face: a dispassionate view of the body's impurity and the steadiness that comes from non-attachment to forms. Santoṣa (contentment) is named in the Sūtras as producing anuttamaḥ sukhalābhaḥ, the highest happiness. The classical commentary treats it less as something to cultivate than as a disposition that arises naturally as the other limbs develop.
[Tapas](lexicon:tapas), usually rendered as austerity but more precisely meaning heat, is the willingness to submit the body and the conditioned mind to disciplined friction. The Yoga Sūtras treat tapas as a productive force capable, over time, of burning through the impurities the path is designed to clear. The tapas entry maps the term in full. Svādhyāya (self-study) covers both recitation and study of canonical texts (the Vedas, the Upaniṣads, the Bhagavad Gītā) and the recursive examination of the self those texts model. Īśvara-praṇidhāna (surrender to the Lord) is the disposition of resting one's actions in something larger than the conditioned self. Patañjali names this same disposition in the first chapter of the Sūtras as sufficient, under the right conditions, for samādhi.
Niyama in practice
The niyamas are the operative ethical substrate of every yogic curriculum the index covers, even where the Sanskrit vocabulary recedes. Sadhguru's *Inner Engineering: A Yogi's Guide to Joy* and the Inner Engineering Online programme carry the niyama register inside a Śaiva tantric framing: the daily kriyā the programme prescribes is tapas in operational form, and the disposition it cultivates is closer to santoṣa than to any specific cognitive outcome. Paramahansa Yogananda's *Autobiography of a Yogi* walks svādhyāya and Īśvara-praṇidhāna through the kriyā-yoga lineage of Lahiri Mahasaya in a hagiographic register. Jon Kabat-Zinn's MBSR drops the Sanskrit entirely, but the body-and-attention regimen of the eight-week programme maps recognisably onto the śauca and tapas axes of the same analysis, refigured as clinical attention training. The yama, tapas and sadhana entries map the surrounding territory.
Niyama vs related concepts
Niyama is not asceticism in the Christian-monastic sense. It names dispositions held within household life and in the world, not a withdrawal from them. Tapas is the most easily misread of the five: the classical commentary treats forced austerity that produces resentment or rigidity as a degraded form, not the strong reading of the practice. Niyama is also distinct from the broader Hindu category of dharma, which names the situation-bound ethical particulars of householder, warrior, and ascetic life. The niyamas are the limbs Patañjali treats as common to every practitioner of the eight-fold yoga, regardless of station. The five niyamas are also not separable in practice from the five yamas. The classical commentary treats the ten together as the pair of feet on which every subsequent limb stands; the absence of either is held to undermine the rest.
