If you observed Ekasana (one meal in one sitting) for a fixed one day, the niyam naturally ends after that day. If you had taken Ekasana as an ongoing niyam (for many days or “till further notice”), you should formally release it (uttar) the next day before taking food.

Simple, traditional way to release (Shvetāmbara practice)

• Before breakfast on the next day, stand with folded hands facing the Pañcha-Parameṣṭhī or, if available, in the presence of Guru.
• Recite Navkār Mantra.
• With humility say a brief uttar such as:

“Aaj hun ekāsan nu niyam uttarūn chhu. Je bhul thāyī hoy te mate kṣamā.” (Today I release my Ekasana niyam. I seek forgiveness for any lapses.)

• Say “Micchāmi Dukkaḍaṁ.”
• Then take food as per normal maryādā.

Digambara practice

• Intention and sequence are the same: bow to the Jinas, mentally release the vow, ask forgiveness, and only then eat. Wordings vary by local paramparā; keep it simple and truthful, without attachment.

Notes to keep the dharma-maryādā

• Do the release before eating or drinking anything that would break the previous niyam.
• If you had specified a fixed period (e.g., “Ekasana for 3 days”), it ends automatically after that period; still, it is good to offer kṣamā and mentally close the niyam.
• If you are unsure of your community’s exact wording, use a simple release as above; purity of intent (bhāva) is primary.

Helpful references

• Ekasanu/Ekashana basics and pachkhan:
• Practical steps for doing Ekashana at home:
• Example Ekashana pachkhan (for taking the vow):