In Jainism, "Dasam" refers to the Ten Virtues (Das Lakshana Dharma or Das Dharma), which are highly important for spiritual development and self-purification. These virtues are especially emphasized during the Paryushana festival, a significant period of spiritual renewal and self-discipline for Jains.

The Ten Virtues (Das Dharma) are:

1. Uttam Kshama (Supreme Forgiveness)
2. Uttam Mardava (Supreme Humility)
3. Uttam Arjava (Supreme Straightforwardness)
4. Uttam Shauch (Supreme Contentment or Purity)
5. Uttam Satya (Supreme Truthfulness)
6. Uttam Sanyam (Supreme Self-Restraint)
7. Uttam Tapa (Supreme Austerity)
8. Uttam Tyaga (Supreme Renunciation)
9. Uttam Akinchanya (Supreme Non-attachment)
10. Uttam Brahmacharya (Supreme Celibacy/Chastity)

Importance of Dasam (Ten Virtues) in Jainism:

1. Path to Liberation: Practicing these virtues helps in purifying the soul, reducing karma, and ultimately attaining moksha (liberation).
2. Moral Foundation: They form the ethical and moral foundation of Jain life, guiding both monks and laypersons.
3. Self-Discipline: Observance of these virtues encourages self-control, non-violence (ahimsa), and compassion towards all living beings.
4. Spiritual Progress: Regular reflection and practice of these virtues lead to spiritual progress and inner peace.
5. Community Practice: Especially during Paryushana, Jains focus on one virtue each day, promoting collective spiritual upliftment.

In summary, Dasam (the Ten Virtues) are central to Jain ethics and spiritual practices, aiding the aspirant in overcoming passions, purifying the soul, and progressing on the path toward liberation.