Answer

Yes, you may take a pachchakkhān after completing your ekāsanā, but the correct pachchakkhān depends on what you intend to renounce now.

If you have already eaten your one sitting for ekāsanā, you can take a vow such as:

• No more food for the rest of the day
• No food until sunrise tomorrow, if appropriate in your tradition
• Chauvihār or tivihār, depending on whether you will also give up water

Explanation

In ekāsanā, the main rule is to eat only once, in one sitting, within the proper limits. After you have completed that meal, you should not eat again.

So if you did not take pachchakkhān before eating, you can still sincerely take a pachchakkhān now for the remaining period, such as:

• “I will not eat anything more today.”
• “I will observe chauvihār from now until tomorrow morning.”
• “I will observe tivihār from now until tomorrow morning.”

Spiritual Understanding

Pachchakkhān is a conscious renunciation. Even if taken after eating, it still helps strengthen discipline, awareness, and restraint. The important thing is sincerity and following the vow properly from the time it is taken.

Takeaway

Yes, you can take pachchakkhān now, but take it only for what remains possible from this point onward. If you are unsure of the exact wording, ask your guru, sādhu-sādhvījī, or a knowledgeable person in your Jain tradition.