In Jainism, particularly among Shwetambar sects, there is a practice of drinking only boiled water (known as panthapaanī or ukāḷū pāṇī) to minimize the harm to microorganisms present in raw water. The duration for which boiled water can be consumed after boiling is referred to as a kaad (also spelled kaal or kaalavadhi).

According to Jain Shastras and traditional practice:

• In Chaturmas (monsoon period): Boiled water can generally be consumed up to 24 hours (one prahara or one peher) after boiling.
• In the rest of the year: Boiled water can be consumed up to 48 hours after boiling.

After this period, the water is believed to potentially develop new life forms (microorganisms), and thus, it should not be consumed according to Jain discipline.

Note: These timings can vary slightly based on the specific tradition or sect, but the above is the commonly followed guideline among Shwetambar Jains. Digambar Jains often observe even stricter practices, sometimes boiling water freshly for each use.

References:

• Jain Agamas (e.g., Vyavahara Bhasya)
• Jain household codes of conduct (Maryada Patra, Kartikeyanupreksha)
• Jain monk and nun conduct manuals (Chulika, Acharanga Sutra)

If you have a specific tradition or sect in mind, let me know for more precise details!