Das Lakshan Mahaparva is a major sacred festival in Jain Dharma, especially observed by Digambar Jains. It is a 10-day observance dedicated to the practice of the 10 supreme virtues of the soul.

These ten qualities are:

1. Kshama — Forgiveness
2. Mardava — Humility
3. Arjava — Straightforwardness
4. Satya — Truth
5. Shauch — Purity / Contentment
6. Sanyam — Self-restraint
7. Tapa — Austerity / Penance
8. Tyaga — Renunciation / Charity
9. Akinchanya — Non-attachment
10. Brahmacharya — Chastity / Celibacy

During this parva, Jain followers focus on:

• आत्म-चिंतन and आत्मशुद्धि,
• fasting or partial fasting,
• prayer, swadhyay, and meditation,
• reducing attachment and anger,
• and cultivating the ten dharmas in daily life.

Its main purpose is purification of the soul and moving toward moksha through right conduct and inner discipline.

In simple words, Das Lakshan Mahaparva is a 10-day festival of self-purification, forgiveness, and spiritual upliftment.