Answer

During Ekāsana (often written as “ekshana”), you may drink water according to the rule or vow you have taken.

In common Jain practice:

• Boiled and cooled water is usually taken.
• Water should be taken only during the permitted daytime period.
• Many people drink water only until sunset.
• Some stricter forms allow water only during the single sitting, while others allow water separately during the day.

Explanation

Ekāsana means eating only one time in one sitting during the day. The exact water rule can vary by family tradition, sect, guru’s guidance, and the specific vow you are observing.

So the safest answer is:

• If your vow is Ekāsana with water allowed, you may drink boiled water during the allowed time.
• If your vow is Ekāsana with stricter restriction, water may be limited to the same sitting or avoided after a certain time.
• After sunset, Jain practice generally avoids food and water due to the principle of ahimsa and discipline.

Spiritual Understanding

The purpose of Ekāsana is not only eating less, but practicing:

• self-control,
• restraint of taste,
• awareness,
• and reduction of harm.

Takeaway

You can usually have boiled water during the permitted daytime period, but the exact timing depends on the Ekāsana rule you have taken. If unsure, follow your family tradition or ask your guru/elder for the specific maryādā.