In Niyamasāra, samyama, or self‑restraint, is portrayed as a fundamental inner discipline through which the soul begins to free itself from karmic bondage. It is defined as the conscious control and regulation of mind, speech, and body so that they do not act under the sway of passions such as anger, pride, deceit, and greed. This restraint is not merely a matter of outward behavior; it is an integrated discipline that seeks to align thought, word, and deed with non‑violence, truthfulness, and freedom from attachment. By curbing inauspicious activities and cultivating wholesome ones, samyama becomes the practical expression of right faith, right knowledge, and right conduct.

The tradition presents this discipline through both vows and protective restraints. The great vows of non‑violence, truthfulness, non‑stealing, celibacy, and non‑possessiveness give samyama a clear ethical contour, while the restraints of mind, speech, and body specify how this ethic is to be guarded in every moment. In this way, samyama is not a vague ideal but a structured practice that touches every layer of human activity. It is a graduated path, beginning with basic ethical observances and extending toward ever subtler forms of renunciation and mastery.

At its heart, however, samyama is an interior transformation rather than mere external asceticism. Genuine restraint requires inner purification through sustained awareness, self‑reflection, and the cultivation of equanimity toward pleasure and pain. As involvement in external objects and sensory pleasures is reduced, detachment and even‑mindedness deepen, and the distinction between the pure self and the body or possessions becomes clearer. This interiorization ensures that ethical observances are not hollow forms but living expressions of an increasingly purified consciousness.

Through such disciplined self‑restraint, the influx of new karmas is checked and bound karmas are gradually worn away. Samyama thus serves as a vital means to both the stoppage of karmic influx and the shedding of existing karmic impurities. As karmic veils thin, the intrinsic qualities of the soul—knowledge, perception, bliss, and energy—are able to manifest with greater clarity. In this vision, self‑restraint is not suppression but a conscious, sustained redirection of energy that prepares the soul for liberation.