Aathai Tap (also written Atthai/Aathai) means fasting for eight continuous days. It is a serious Jain vrata done for samvar (stopping new karma) and nirjara (shedding bound karma), with deep focus on self‑restraint and purity of bhav.

What it involves

• Eight consecutive days of anashan (no food).
• Generally only boiled water is taken, and only during prescribed daylight hours as per maryada.
• Each day is joined with samayik, pratikraman–alochana, svadhyaya (scripture study), jap of Navkar Mantra, and kayotsarg (meditative stillness).
• Begin with proper pachchakhan (vow) and end with disciplined parna (breaking the fast) at the right time.

Why “eight”?

• It aligns with the 8 days of Paryushan (in Shwetambar tradition), a period focused on repentance, forgiveness, and study.
• It symbolically addresses purification related to the eight types of karmas (ashta‑karma).
• “Eight” is a sacred number across Jain tradition (e.g., ashta‑mangalas), reminding us to cultivate many virtues together.

Traditional notes

• Shwetambar: Commonly observed during the 8 days of Paryushan; many undertake Aathai then.
• Digambar: While Das‑Lakshan spans 10 days, an 8‑day fast (Atthai Tap) is also respected. In both traditions, the goal is inner purity and kashaya‑kshaya (reducing anger, pride, deceit, greed).

Essential maryada (discipline)

• Maintain ahimsa in thought, word, and deed; speak less and truthfully.
• Avoid display or competition; keep humility.
• If health is delicate (illness, pregnancy, age, medication), take guidance and adopt a lighter niyam (e.g., boiled‑water fast, ekasan). Protecting the body is also ahimsa.

Spiritual essence

• Aathai Tap is not for hardship or show. It calms the mind, softens passions, and supports forgiveness and equanimity, helping the soul progress on the path of liberation.

For simple, trusted explanations see:

• Why do we do 8 upvaas?
• 8 days fasting (Atthai) – basics and maryada
• Benefits and intent of Atthai