Kaṣāya rasa — astringent
Contracting / drying teaching proxy
Kaṣāya, the astringent taste, is placed at a lower-abdominal and colon proxy to make its contracting and drying teaching language legible. This is a target-organ projection of a substance classification, not an anatomical map of colonic function or a diagnostic sign.
Point 6 of 6 in Ṣaḍ Rasa — Six Tastes
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Caraka Saṃhitā (primary_canonical)
Sūtrasthāna 26–27 classifies kaṣāya and discusses its contracting and drying qualities; the lower-abdominal proxy is not a textual coordinate.
Aṣṭāṅga Hṛdayam (primary_canonical)
Sūtrasthāna 10 records kaṣāya's taste profile and actions; no fixed colon point is prescribed by the chapter.