In Jainism, particularly among Shwetambar sects, there are specific rules regarding the consumption of boiled water (known as ushṇodaka or upla). The primary reason for boiling water is to minimize harm to microscopic life, which aligns with the Jain principle of ahimsa (non-violence).

Time Limit for Boiled Water:

• Shwetambar tradition: Boiled water can generally be consumed for up to 24 hours (eka prahara) after boiling during the summer, and up to 48 hours (do prahara) in the winter. However, the most commonly observed and recommended practice is 24 hours from the time of boiling.
• Digambar tradition: The rules may vary, but Digambar monks are much stricter and often only drink water that has been filtered freshly and consumed immediately.

Reason: After this time, it is believed that new life forms may start to develop in the water, and drinking it may violate the principle of ahimsa.

Jain Laypeople (Shravaks/Shravikas): They are also encouraged to follow this discipline, especially during Paryushan, but the strictness may vary according to individual capability and local tradition.

Summary Table:

| Season | Max. Time to Use Boiled Water | |---------------|------------------------------| | Summer | 24 hours | | Winter | 48 hours (some traditions) |

Important: Always use a clean, covered vessel to store the boiled water, and filter it before drinking, as per Jain practices.

References:

• "Jain Path of Purification" by Padmanabh S. Jaini
• "Jainism: The World of Conquerors" by Natubhai Shah
• Local Jain community guidelines

If you follow a particular Jain sect, it's best to consult your tradition or Guru for the most accurate practice.