Here is a simple, authentic way to take a “Prahar Pachchakkhan” (time‑bound pratyakhyān) for 3 days.

What it means

• Prahar = about 3 hours. A day-night cycle has 8 prahars (4 day + 4 night).
• Prahar Pachchakkhan = you allow yourself to take food/drink only within a chosen prahar; outside that prahar, you abstain.
• Duration you want: 3 days.

How to do (simple procedure) 1) Sit in śuddha-bhāv (clean intent), face East or North. Recite Navkār Mantra. 2) Clearly state: your name, place, date, chosen prahar (with clock times), and duration (3 days). 3) Take the vow (pachchakkhan) with exceptions only for medicine per your guru/maryādā. 4) End with kṣamā-yāchanā: “Micchāmi Dukkaḍaṃ.”

Sample wording you can use (choose one language and fill the blanks)

• English

“I, [name], at [place], on [date], take a Prahar Pachchakkhan for 3 days. I will take food and drink only during the [chosen prahar] from [hh:mm] to [hh:mm]. Outside this prahar, I renounce all food and drink. Medicine, if truly needed, will be taken only as per maryādā. I will keep care for non‑violence and self‑restraint. Michchhāmi Dukkaḍaṃ.”

• Hindi

“मैं, [नाम], [स्थान] में, [तिथि] को, 3 दिनों के लिए ‘प्रहर पच्चक्क्खण’ लेता/लेती हूँ। मैं केवल [चयनित प्रहर] ([hh:mm] से [hh:mm]) के भीतर ही आहार‑पान करूँगा/करूँगी। इसके बाहर आहार‑पान का त्याग करता/करती हूँ। औषधि आवश्यकता होने पर गुरु‑मर्यादा के अनुसार ही लूँगा/लूँगी। अहिंसा और संयम का पालन करूँगा/करूँगी। मिच्छामि दुक्कडम्।”

• Gujarati

“હું, [નામ], [સ્થળ] ઉપર, [તારીખ]એ, 3 દિવસ માટે ‘પ્રહાર પચ્ચક્ક્હાણ’ લેું છું. હું માત્ર [પસંદ કરેલ પ્રહાર] ([hh:mm]થી [hh:mm]) દરમ્યાન જ આહાર‑પાન કરીષ. તે સમય સિવાય આહાર‑પાનનો ત્યાગ કરીષ. દવા જરૂરી થાય તો ગુરુ‑મર્યાદા મુજબ જ લીષ. અહિંસા અને સંયમનું પાલન કરીષ. મિચ્છામિ દુક્કડં.”

Notes by tradition

• Śvetāmbara: Commonly done with Navkār, saṅkalp, and pachchakkhan wording as above; often taken before or after samayik/pratikraman.
• Digambara: The practice is “pratyākhyāna/niyama” with the same essence—time‑bound aahar‑niyam. Exact phrasing may vary by ācārya/maryādā. Keep the same clarity: time window, items renounced, and duration.

Helpful tips

• Write the exact clock times for your chosen prahar (e.g., Day 2nd Prahar: 9:00 AM–12:00 PM).
• If you also wish to include items to avoid (e.g., roots/greens/processed foods), add them clearly to the vow.
• Renew the bhāv each morning; close the 3rd day with heartfelt kṣamā.

If you want a brief reference on vows and daily niyams, see: