hindu-cosmosWe're still mapping where this idea was first discussed. Key passages and related ideas below.
Tattva 18 — Touch (Tvak)
The power to feel: the subtle faculty of touch and contact, working through the skin.
Tvak is the capacity for touch — the subtle power of feeling contact, pressure, and texture that operates through the skin. The second of the five knowing-faculties, it is how the embodied self senses what it meets physically. Like the other sense-capacities, it is a subtle principle, distinct from the bodily organ through which it works.
Key passages(2)
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Bṛhadāraṇyaka Upaniṣad 3,2.9↗explains
Bṛhadāraṇyaka Upaniṣad · Vedic Revelation (śruti)
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