Answer

In Jain tradition, Sudarshan Vrat is commonly understood as Sudarshan Tap—a special austerity in which 24 upavās are observed, with a pāraṇā after each fast. Jain reference works also list “Sudarshan” as a named vrat, and one classical Jain narrative connects it with the two scholars Prahasit and Vikasit. ( encyclopediaofjainism.com)

Explanation

In simple language, this vrat is a discipline of fasting and restraint meant to purify the mind and reduce attachment. In Jain teaching, vrats are not only about food; they are about self-control, right conduct, and inner purification. The broader Jain framework also teaches that vrats are supported by right faith and should be practiced with sincerity. ( jainkosh.org)

Spiritual Understanding

The spiritual purpose of Sudarshan Vrat is karma reduction, detachment, and strengthening of devotion. In the traditional story connected with this vrat, those who observed it are said to have attained a higher heavenly rebirth, showing the merit traditionally associated with such tapas. This is best understood as a Jain devotional and ascetic observance, not merely a physical fast. ( encyclopediaofjainism.com)

Takeaway

So, Sudarshan Vrat is a Jain austerity centered on fasting, discipline, and spiritual purification. In many Jain references, it is specifically described as the 24-upavās Sudarshan Tap. ( encyclopediaofjainism.com)