Jainism does not specifically focus on "nadi" (meaning veins or energy channels in some Indian traditions) as a central concept. However, "tap" (तप) is an important aspect in Jainism.

Tap (तप) in Jainism refers to austerities or penances performed to purify the soul and destroy karmas. There are two main types:

1. Bahyatapa (External austerities) – These include:

- Anshan (fasting) - Unodari (eating less than one’s appetite) - Vrutti-sankshep (limiting food items) - Ras-tyag (giving up tasty foods) - Kaya-klesha (physical endurance) - Sanlinata (solitude)

1. Abhyantar-tapa (Internal austerities) – These include:

- Prayaschitta (penance) - Vinay (humility) - Vaiyavritya (service to others) - Swadhyay (scriptural study) - Vyutsarga (renunciation) - Dhyan (meditation)

If you meant something specific by "nadi" within a Jain context, please clarify your question. In Jain scriptures, the focus remains on spiritual practices and ethical conduct rather than yogic nadi systems.