Within the Swaminarayan Sampraday, purity is cultivated as a comprehensive discipline that embraces body, mind, conduct, and environment. A central expression of this is dietary purity: devotees follow strict vegetarianism, abstaining from meat, fish, eggs, and intoxicants such as alcohol. Many also refrain from onions and garlic, and food is ideally prepared in a clean setting by a person in a state of ritual cleanliness. Before being eaten, food is first offered to God, so that it becomes sanctified as prasād. Fasting on sacred days and careful attention to who prepares and serves food further reinforce this sense of sacred discipline around nourishment.

Physical and ritual purity are also emphasized in daily life. Devotees bathe regularly, often before worship and meals, and then put on clean, modest clothing. The application of tilak markings and the maintenance of clean living spaces and temples express an awareness that the body and surroundings are instruments of devotion. Before entering a temple or performing worship, hands, feet, and sometimes the mouth are washed, and simple acts of ritual purification may be performed. Rules related to conditions such as birth, death, or other states of impurity in the family often guide participation in temple worship and certain domestic activities.

Purity of conduct and relationship is treated as equally essential. Celibacy is strictly observed by renunciants, while householders are encouraged to regulate marital relations in a dharmic manner and to avoid situations that stir excessive passion. Ethical purity includes non-violence, truthfulness, honesty in dealings, and the rejection of gambling, adultery, and corrupt behavior. Care is taken to avoid harmful association and to maintain respectful, disciplined relationships within the community, with particular attention to appropriate boundaries between men and women.

Finally, mental and spiritual purity are cultivated through sustained devotional practice. Devotees strive to restrain anger, greed, lust, and ego, and to avoid gossip, harsh or obscene speech, and degrading forms of entertainment. Regular prayer, meditation, scriptural study, and participation in satsang serve to refine inner awareness and keep the mind oriented toward God. In this way, purity is not merely a set of external rules, but a continuous effort to align thought, word, and deed with a life of devotion and discipline.