The Ācāranga Sūtra presents a rigorous vision of monastic life in which non‑violence, restraint, and renunciation are woven into every detail of conduct. At its heart stands ahimsa, non‑violence toward all living beings, extending from humans and animals to plants and even subtle or microscopic forms of life. Harm is understood not only as physical injury but also as violence in thought, speech, and intention, so that harsh words, negligence, and inner malice are treated as ethically significant. This radical sensitivity to life leads to meticulous care in movement, speech, and the use of resources such as water, fire, earth, and plants, all of which may be abodes of living beings. The monk is thus called to a constant vigilance that transforms ordinary actions—walking, sitting, eating—into occasions for spiritual discipline.

The text places the Five Great Vows (mahāvratas) at the center of this discipline: ahimsa (non‑violence), satya (truthfulness), asteya (non‑stealing), brahmacarya (celibacy), and aparigraha (non‑attachment or non‑possession). These vows are not merely abstract ideals but are unpacked in concrete rules governing daily life. Truthfulness becomes a careful practice of speaking only what is true and harmless, often favoring silence over unnecessary talk. Non‑stealing is interpreted as scrupulous avoidance of taking anything not freely given, while celibacy demands purity in thought, word, and deed. Non‑possession and non‑attachment require the renunciation of property and inner clinging, so that the monk lives with only minimal necessities such as simple robes and an alms bowl, cultivating a deep simplicity of life.

The ascetic ideal described in the Ācāranga Sūtra is that of the wandering, homeless monk who has left behind household life, social identity, and worldly ties. This wandering life is marked by strict self‑restraint: careful walking to avoid harming even tiny creatures, observance of appropriate times and ways of traveling, and acceptance of alms without preference, greed, or demand. Food and water are approached with particular care, with detailed prescriptions for what may be accepted and how it is to be consumed so as to minimize harm to living beings. Endurance of hardship—heat and cold, hunger and thirst, illness and insult—is praised as a means of purifying karma, and the monk is urged to bear such conditions without anger or complaint.

Underlying these external disciplines is a sustained call to inner transformation. The text emphasizes control of the senses, mindfulness of body, speech, and mind, and ongoing self‑observation and introspection. Passions such as anger, pride, deceit, and greed are to be relinquished, giving rise to equanimity, forgiveness, and a universal compassion that sees all beings as fundamentally akin in their desire to avoid pain and seek well‑being. Through such conduct, modeled on the example of the Jina, the monk gradually loosens karmic bonds and moves toward liberation. The Ācāranga Sūtra thus portrays monastic life as a finely tuned discipline in which non‑violence, renunciation, and self‑restraint are not separate virtues but facets of a single path of purification.