In a derasar (Jain temple), dress is part of maryada (sacred discipline). Shorts are generally not allowed because:

• Modesty and vinay: The temple is a place of deep reverence. Clothes should cover the body respectfully so the mind of the devotee and others stays focused on darshan and sadhana, not on appearance.
• Shuddhi (purity): Clean, simple, and sufficiently covering clothes are considered shuddha for puja, pradakshina, and sitting on the floor. Very short or revealing garments are seen as ashobhan (inappropriate) in a sanctum.
• Ahimsa and aparigraha: Simple, non-flashy, non-revealing dress supports inner restraint and reduces distraction and attachment.
• Shared space respect: Temples host all ages and genders. A conservative code avoids discomfort and maintains a calm, devotional environment.
• Practicality for rituals: During puja, pratikraman, or sashtang pranam, the body bends and sits on the floor. Longer, modest clothing preserves decorum throughout these movements.

What is generally appropriate:

• Men: dhoti, pajama/kurta, or full-length trousers; during abhishek/puja some derasars ask for traditional dhoti or clean white clothes.
• Women: sari, salwar-kameez with dupatta, or other modest full-length attire.
• Children: at least knee-length or longer; ideally full-length.

Notes on traditions:

• Shvetambar and Digambar temples alike expect modest, clean attire; specific rules (e.g., dhoti for certain pujas, removing upper garment for men in some Digambar rituals) can vary by temple maryada.
• Always follow the posted rules of the specific derasar; they exist to preserve sanctity and concentration in worship.

If you happen to arrive in shorts, many devotees keep a spare wrap, shawl, or dhoti/patiala-style lower to wear inside the temple.