Boiled water kāl (ukālelā pāṇī no kāl) means the allowed time after boiling during which the water may be used, so that new life-forms don’t develop and ahimsā is preserved.

What most traditions follow

• Meaning: Use only water that was boiled in daylight and kept covered/clean. After its “kāl” ends, discard it; don’t mix with fresh.
• Typical limit: About 1 day (≈ sunrise to next sunrise). Many maryādās tell householders to keep it within 24 hours.
• During Paryushan/Chaturmās: Usually stricter—commonly 1 day, sunrise-to-sunrise.
• Outside monsoon: Some Śvetāmbara maryādās permit up to 48 hours; many still keep to 24 hours.
• Night rule (Chauvihār): No drinking after local sunset; resume after sunrise, and only boiled/filtered water.

By tradition

• Śvetāmbara (Mūrtipūjak, Sthānakvāsī, Terāpanth): Daytime‑boiled water; generally 1 day in Paryushan, sometimes up to 48 hours otherwise as per saṅgh’s maryādā.
• Digambara: Emphasis on freshly boiled, daytime water; not kept overnight in many lineages. Follow your ācārya’s guidance.

Practical maryādā tips

• Boil after sunrise; cool covered; use a clean, dedicated vessel and cloth filter.
• Mark the boil date/time; do not refrigerate; do not top‑up old water.
• If your saṅgh allows “re‑boil,” the clock resets from the latest boil; otherwise prepare fresh.

For simple, tradition‑based guidance, see:

• Boiled water kāl during Paryushan
• How long can boiled water be used?
• Chauvihār water timing