Prameha-Nidāna-Lakṣaṇa-Bheda: Etiology, Signs, Varieties, and Complications of Meha
गन्धवर्णरसस्पर्शेः क्षारेण क्षारतोयवत् / नीलमेहन नीलाभं कालमेही मसीनिभम्
gandhavarṇarasasparśeḥ kṣāreṇa kṣāratoyavat / nīlamehana nīlābhaṃ kālamehī masīnibham
In smell, color, taste, and touch it is like an alkaline substance—like water mixed with alkali. One who passes blue urine takes on a bluish hue; one afflicted with “kāla-meha,” passing black urine, appears like ink.
Lord Vishnu (in dialogue with Garuda/Vainateya)
Concept: Indriya-pariksha—multi-sensory examination of bodily excretions as a means of knowing disease states.
Vedantic Theme: Prakriti-vikara: changes in guna and dravya manifest as perceivable transformations (implicit).
Application: Attend to sensory qualities of symptoms (odor, color, taste, feel) for early detection and classification; seek care when systemic discoloration appears.
Primary Rasa: bibhatsa
Secondary Rasa: adbhuta
Related Themes: Garuda Purana 1.159 (classification of prameha/meha types by mutra-guna)
This verse uses observable bodily changes (urine color and alkaline qualities) as diagnostic/omen-like markers, linking the state of the body to impending suffering and the broader Preta-kāṇḍa theme of consequences and preparedness.
By detailing specific disorders and their outward signs, the text frames physical afflictions as part of the lived experience of karmic fruition, encouraging awareness, restraint, and remedial religious conduct.
Treat unusual bodily signs seriously (seek medical care), and pair that with ethical living—truthfulness, non-harm, self-control, and sincere prayer/charity—so one reduces causes of suffering and lives with preparedness.