In Jain Dharma, a muni lives with great restraint and minimizes bodily care.

• Digambar muni: generally do not bathe with water. They avoid bathing because it can involve unnecessary attachment, violence to water-bodied beings, and care for the body.
• Shwetambar muni: may have limited bathing or cleansing, but only according to tradition, need, and strict discipline.

So, in short: a Jain muni does not bathe like a householder; bathing is either avoided or done with very strict restraint, depending on the tradition.