In Jainism, “Ukalela Pani no kal” (ઉકાળેલા પાણીનો કાળ) refers to the specific time period for which boiled water can be used, especially by Jain monks, nuns, and devout laypeople who follow strict rules of non-violence (ahimsa).

Meaning and Practice:

• Water is boiled to kill microorganisms, reducing himsa (violence).
• After boiling, the water is only considered pure and fit for consumption for a certain limited period, usually 24 hours during Chaturmas (monsoon period) and 48 hours during the rest of the year.
• After this period (“kal”), the water may develop new life forms (microbes), so it should not be consumed and must be discarded.

Summary: The “kal” of “ukalela pani” is generally up to 24 hours during Chaturmas and 48 hours otherwise, after which the water should not be used according to Jain discipline, especially for monks and nuns. This reflects Jainism's deep commitment to non-violence, even towards the tiniest living beings.