Answer

In Tivihar Upvas, you may drink only boiled water during the permitted time, and it is generally used only until sunset of the same day.

So if water is boiled after 10:00 AM, it can be used until sunset that day, provided it remains pure and untouched by prohibited substances.

Explanation

In Jain practice:

• Chauvihar Upvas means no food and no water.
• Tivihar Upvas means no food, but boiled water is allowed during the proper daytime period.

Boiled water is taken because boiling reduces living organisms in water. However, after some time, water may again become unsuitable according to traditional Jain conduct, so it is not kept for use beyond the permitted period.

Important Note

The exact rule may vary slightly by tradition, gaccha, or the guidance of one’s guru/saadhu-saadhviji. Therefore, for a vow or tapasya, it is best to follow the instruction given by your family tradition or guru.

Takeaway

For Tivihar Upvas, boiled water prepared after 10 AM is generally taken only until sunset on the same day.