In Digambar Jain tradition, a 10-day fast is commonly called Dash Lakshan Upvas when it is observed during the Dash Lakshan Parva.

It may also simply be called Das Upvas — meaning fasting for ten days.

During Dash Lakshan Parva, Digambar Jains reflect on the ten supreme virtues:

• Uttam Kshama – Supreme Forgiveness
• Uttam Mardav – Supreme Humility
• Uttam Aarjav – Supreme Straightforwardness
• Uttam Shauch – Supreme Purity
• Uttam Satya – Supreme Truthfulness
• Uttam Sanyam – Supreme Self-restraint
• Uttam Tap – Supreme Austerity
• Uttam Tyag – Supreme Renunciation
• Uttam Akinchanya – Supreme Non-attachment
• Uttam Brahmacharya – Supreme Celibacy

Takeaway: A 10-day fast in Digambar Jain practice is generally known as Das Upvas, and during Dash Lakshan it is often associated with Dash Lakshan Upvas.