Shreni Tap is a Jain austerity inspired by King Shrenik (Bimbisara). It emphasizes bhava-tap (mental and behavioral discipline) along with planned fasting or partial fasts, and is often presented as a layperson’s way to purify the self while remaining engaged in worldly duties.

• Core idea: the virtue comes from intention and self-control as much as from bodily austerities. In many accounts, it is framed as a sequence of fasting days (upavas) with periodic partial fasts (parna) and occasional full fasts, totaling a structured period of spiritual practice.
• For lay followers, Shreni Tap highlights that sincere mental resolve and virtuous conduct can accompany and even substitute some ascetic practices.
• Traditions: Jain texts describe Shreni Tap within the broader category of upvas and vrata, and there are variations in how it is practiced and taught in different Jain communities. The essential focus remains on right intention, non-violence, and self-discipline.

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Note: In Jain tradition, there can be small differences in how Shreni Tap is described or practiced between Digambar and Shwetambar communities, but the underlying aim—purification through mindful self-control—remains the same.