If you mean “Can today’s boiled water be used tomorrow for aayambil?” then the safest Jain practice is to prepare fresh boiled water as per the niyam of that day.

In aayambil, rules can differ by tradition and local niyam. So:

• Follow your gurudev / mandir / upashray’s rule
• If no specific guidance is given, fresh boiled water is preferred
• Do not assume today’s boiled water is automatically valid for tomorrow

If you want, I can also explain the exact aayambil niyam for water in simple Jain terms.