Answer

In Jain Dharma, boiled water should generally be used only for a limited time after boiling.

Common traditional practice is:

• Daytime: boiled water may be used for about one prahar, approximately 3 hours.
• Nighttime: boiled water may be used for about one night, depending on tradition and local practice.

After that time, it is usually not considered suitable for strict Jain use.

Explanation

Jains boil water to reduce harm to tiny living beings present in water. After some time, new subtle life forms may begin to develop again, so the water is not kept for too long.

Different Jain communities and traditions may follow slightly different timings. Many people follow the guidance of their Guru, family tradition, or sangh maryada.

Spiritual Understanding

The purpose is not just hygiene, but Ahimsa—carefulness in reducing harm to even the smallest living beings.

Takeaway

For strict practice, follow your Guru’s or sangh’s maryada. A commonly followed rule is to use boiled water within about 3 hours during the day.