In Jainism, the “ten days of parv” usually refers to Paryushan Parva, which is the great period of inner purification and spiritual study.

• Digambar tradition: Paryushan is observed for 10 days. The days are spent in fasting (upvas), reading Jain scriptures, listening to sermons, performing self-scrutiny (Swadhyaya), and doing daily vows (vratas). The last day is often followed by a special day of forgiveness and reconciliation, called Samvatsari Prayaschit, where people seek forgiveness from others for any harm caused during the year.

• Shwetambar tradition: Paryushan is typically observed for 8 days (often called “Paryushan eight days”). The focus is similar—fasting, scriptural study, reflection, and vows. The last day is marked by Kshamavani (the day of forgiveness), where people ask for forgiveness from all living beings, and extend forgiveness to others as well.

Key practices during the period (common to both traditions):

• Upvas (fasting) or partial fasting
• Swadhyaya (study of Jain scriptures)
• Sthanakvasi or Samayik (periods of meditation with a fixed time, often in a quiet place)
• Pratikraman (self-examination and confession of faults)
• Seva (virtuous acts, charity, and helping others)
• Forgiveness on the last day (Samvatsari or Kshamavani) to cleanse relationships and thoughts

If you’d like, I can explain the day-by-day emphasis for a Digambar 10-day Paryushan or a Shwetambar 8-day Paryushan, or provide guidance on how to observe these days at home.