In Jainism, a muni (monk) does not perform or participate in seva puja (service worship) for several core reasons:

• Focus on liberation, not ritualism: The path of a Jain muni is to attain keval-jnana (omniscience) through complete right faith, right knowledge, and right conduct. External worship or service rituals directed at deities or idols are not part of a muni’s spiritual discipline. Their aim is inner purification, not performing or receiving ritual offerings.

• Detachment and non-attachment: Monks take strict vows of non-attachment to material objects, including ritual objects and devotional ceremonies. Participating in seva puja can foster attachment to rituals, which contradicts the renunciate life they have chosen.

• Roles of lay followers vs. monks: In Jain practice, lay followers (upāsakas/upāsikas) perform devotional activities, offerings, and temple rituals to cultivate virtuous habits and support the sangha. Monks are not the actors in these devotional ceremonies; they guide, teach, and uphold the code of conduct, while remaining separate from such worship themselves.

• Digambar and Śvetāmbar traditions: Both traditions generally emphasize the monk’s withdrawal from idol worship and ritualistic puja. There can be differences in how devotion is expressed (for example, more emphasis on reflection on the Tirthankaras’ qualities, or on meditation and moral conduct), but neither tradition sanctions monks routinely conducting seva puja.

In short, Jain munis refrain from seva puja because their spiritual discipline centers on self-effort, non-attachment, and inner purification, whereas devotional worship is primarily the realm of lay followers and temple rituals.