Answer

In Jain practice, after doing Chauvihar at night, water is generally consumed only after sunrise the next morning.

Many Jain families follow the rule of drinking water only after:

• Sunrise has occurred, and
• The water is properly boiled and cooled, according to the day’s usage rules.

Explanation

In Jain Dharma, eating and drinking after sunset is avoided because of Ahimsa—to reduce harm to tiny living beings that may be more active or less visible at night.

So if you have taken Chauvihar Pachchakkhan, then you avoid both food and water during the night, and take water only after sunrise.

Takeaway

A simple guideline is:

No water after Chauvihar at night; water may be taken after sunrise in the morning.

For exact timing, one should follow the sunrise time of their local place and the guidance of their Guru or Jain tradition.