Answer

In Tivihār Ekāsanā pachchakkhān, you may have water only until sunset.

After sunset, water is not taken.

Explanation

In Jain practice:

• Chauvihār means giving up all four types: food, water, mukhwas, and other consumables after the set time.
• Tivihār generally means food is restricted, but boiled water may be allowed until sunset, depending on the exact pachchakkhān taken.
• For Ekāsanā, food is taken only once in one sitting, and after that no food is taken.

So in Tivihār Ekāsanā, after completing the one sitting of food, you should not eat again, but boiled water can be taken until sunset if your pachchakkhān allows it.

Spiritual Understanding

The purpose of Ekāsanā is to reduce attachment to taste and comfort, and to develop self-control. Taking water only within the permitted time helps maintain discipline and awareness.

Takeaway

For Tivihār Ekāsanā, water is generally allowed until sunset only. After sunset, avoid water. If your Guru Maharaj/Sadhviji has given a specific pachchakkhān wording, follow that exactly.