Below is a simple, authentic way devotees commonly observe Siddhi Tap. Please note that maryada (exact rules) can vary by sangh and guru; always follow the guidance of your own guru/pravachan.

What “Siddhi Tap” means

• A rigorous vrata of fasting and self‑discipline done to purify karmas and progress toward siddhi (spiritual accomplishment). It is not the same as the 9‑day Ayambil Oli, though some maryadas include Ayambil-type food on eating days.
• Both Śvetāmbara and Digambara traditions practice Siddhi Tap; the inner purpose is identical, but the schedule and food rules can differ slightly.

Two well-known authentic formats 1) 6 days alternate fasts + final attham/atthai (total 9 or 10 days)

• Day 1: Upvās (complete fast)
• Day 2: Ekāsan (one meal, very simple)
• Day 3: Upvās
• Day 4: Ekāsan
• Day 5: Upvās
• Day 6: Ekāsan
• Day 7–9: Attham (continuous 3-day fast) or

2) Two attham with one parṇā in between (very rigorous)

• Days 1–3: Attham (3 days continuous fast)
• Day 4: Parṇā (break fast once, in discipline)
• Days 5–7: Attham (again 3 days continuous fast)

Daily spiritual routine (for all days)

• Pratyākhyān/Pacchakkhān: Take vow in the morning with clear niyam (what you will and won’t take).
• Samayik: Sit in equanimity at least once daily; keep mān, māyā, krodh, lobh in check.
• Svādhyāy and Japa: Study Tattva, recite Navkār Mantra, Logassa, and stavans with bhāva.
• Pratikraman/Ālochana: Evening introspection and repentance.
• Dāna and Seva: Support sādhus/sādhvīs, upāśray/mandir activities without show.
• Ahiṁsā and Apramāda: Extra care in speech, movement, and handling water/food.

Food and water discipline

• Upvās days: No food. Water only as per your maryada (many keep only boiled/cooled water during daylight; some keep nirjal in attham/atthai).
• Ekāsan (one-sit meal) days: Eat once, before sunset, in a single sitting, without taste-seeking. Many sanghs keep it in Ayambil style: no milk/curd, no oil/ghee, no sugar/jaggery, no fried/fermented; very simple boiled grains/pulses with minimal or no salt. Use only boiled water within allowed times. For a ready “Ayambil nu Pachkhan,” see

When to do it

• Choose dates after consulting your guru and local panchāng. Many observe outside travel/illness periods and not during duties that would cause pramāda.

How to begin and complete

• Saṅkalpa: In the presence of a guru/elder, take pacchakkhān clearly (number of days, water rule, food rule).
• Maintain serenity: Avoid gatherings that provoke rāga–dveṣa, reduce devices/entertainment, keep mauna for a set time if possible.
• Parṇā (breaking fast): Do only in daylight, with proper maryada (boiled water first, then very light, simple items). Offer kṣamā for any lapses.
• Do not force the body: If health becomes risky, take guidance and modify or conclude with due repentance; Jain Dharma upholds ahiṁsā toward one’s own body too.

Notes on traditions

• Śvetāmbara: The 6‑day alternate upvās–ekāsan followed by attham/atthai is common; some keep ekāsan strictly like Ayambil.
• Digambara: The focus is equally on tapas with svādhyāy, pratikraman, and restraint; exact food rules and sequence may differ by sangh. Follow your ācārya’s maryada.

Essence

• Siddhi Tap is not about endurance alone; it is about inner quietude, non‑attachment, and careful conduct. If the mind stays pure and vigilant, the tap attains its true siddhi.

Helpful references

• What Siddhi Tap is (short explainer):
• Why it is performed and its benefits:
• Ayambil rules (if your maryada uses Ayambil-style ekāsan): and