kṣīra-dadhi-nyāya: what the term means and how it is translated
kṣīra-dadhi-nyāya क्षीरदधिन्यायः is an Ayurvedic technical term. It is rendered into English in 5 different ways, which is the reason this page exists: the renderings do not agree, and the difference between them changes what the term is taken to mean.
| Transliteration | kṣīra-dadhi-nyāya |
|---|---|
| Devanagari | क्षीरदधिन्यायः |
| Also written | ksheera dadhi nyaya, kshira dadhi nyaya, pariṇāma-pakṣa / pariṇāma-vāda (the position itself, as Cakrapāṇi names it), sarvātma-pariṇāma-vāda (the strong form Cakrapāṇi refutes) |
| Category, as gathered | dhatu |
| Grouped here under | Body: tissues, wastes and channels |
| Classical citations | 4 |
Is the name itself classical?
The doctrine is classical. The name is not, so far as the retrievable corpus goes.
The four citations here document the DOCTRINE and not the NAME. Checked directly against GRETIL's Agnivesa Carakasamhita-parts with the Ayurvedadipika (328,448 characters, ed. Trikamji, Chaukhambha 1994, data entry Oliver Hellwig): ksiradadhi occurs ZERO times in any form, joined or hyphenated, and ksira and dadhi never fall within sixty characters of one another anywhere in the file. What Cakrapani does use, in his commentary on Ca.Su.28.4, is parinamapaksa and parinamavada for this position, and he reserves nyaya for its two RIVALS: khalekapota appears five times and kedarikulyanyayas once. The whole file contains only five nyaya compounds and none of them is ksiradadhi. So the passage supports the transformation doctrine under the name Cakrapani actually gives it, and the refutation was right that it does not support the term this record is filed under.
How it is translated, and whether the translation holds
Each rendering is given with the source that uses it. The assessment is ours.
Theory of sequential transformation
WHO International Standard Terminologies on Ayurveda (2022) · ITA-2.6.19 · standard
WHO's description: 'it states that the seven structural components are sequentially transformed from primary circulating nutrient fluid (primary product of digestion) to semen just as milk is transformed into curd and then butter and ghee.' Note WHO extends the simile to butter and ghee, which the name (milk/curd) does not.
Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that licence permits. It is deliberately absent from the downloadable dataset, which is offered under CC BY 4.0 and invites the modification a NoDerivs licence forbids.
Theory of Transformation
Int J Res Ayurveda Pharm 11(6):2020, nyāya survey · section 'Ksheera Dadhi nyaya' · paper
COMPARATOR. Also glosses it as describing 'Dhatu Parinama (tissue formation and development)'.
milk curdling analogy
Charak Samhita Online (carakasamhitaonline.com) · Grahani Chikitsa, 'The process of nourishment of dhatu' · website
COMPARATOR ONLY, in copyright.
transformation of nutrients
J Ayurveda Integr Med, PMID 32855015 (2021) · abstract · paper
The paper's parenthetical gloss.
Law of Transformation
common BAMS lecture/textbook usage · textbook · our paraphrase of the source, not its words
Widespread; 'law' overstates what is a simile used in a commentarial argument.
The classical passages
Each citation gives its address so a reader can check it in a printed edition, our account of what the passage establishes, and the result of reading it against its source.
Charaka Samhita with Cakrapāṇidatta's ĀyurvedadīpikāSūtrasthāna 28:commentary on v.4, Cakrapāṇi's segment 25 · checked against the source
kiṃca pariṇāmapakṣe vṛṣyaprayogasya raktādirūpatāpattikrameṇāticireṇa śukraṃ bhavatīti kṣīrādayaśca sadya eva vṛṣyā dṛśyante
Cakrapāṇi names this position pariṇāma-pakṣa, NOT kṣīra-dadhi-nyāya, and raises an objection to it: on the transformation view an aphrodisiac would take a very long time to become śukra, yet milk and the like are seen to act as aphrodisiacs at once. CRITICAL: the string 'kṣīradadhi' does not occur anywhere in this commentary file.
Charaka Samhita with Cakrapāṇidatta's ĀyurvedadīpikāSūtrasthāna 28:commentary on v.4, Cakrapāṇi's segment 27 · checked against the source
eṣu ca pakṣeṣu sarvātmapariṇāmavādo viruddha eva yena sarvātmapariṇāme tricaturopavāsenaiva nīrasatvāccharīrasya maraṇaṃ syāt māsopavāse kevalaṃ śukramayaṃ śarīraṃ syāt
Cakrapāṇi explicitly REFUTES the total-transformation view by reductio: if every part of a dhātu were transformed, three or four days of fasting would empty the body of rasa and kill it, and a month's fast would leave a body made entirely of śukra. This is the single most important and most often omitted fact about this nyāya.
Charaka SamhitaCikitsāsthāna 15:Kaviratna's v.20 · checked against the source
Some are of opinion that the transformation (of one 'dhatu' into another) takes place in six days and nights.
The transformation account, with a stated period, is reported in the mūla as one opinion among others.
Sushruta SamhitaSūtrasthāna 14:not numbered in Bhishagratna · checked against the source
The Rasa is successively transformed into each of the six remaining fundamental principles of the body, and continues in the shape of each for the period of three thousand and fifteen kalas five days according to our modern computation . Thus the Rasa is converted into semen, or into the menstrual blood (ovum) in women, in the course of a month.
Sushruta gives the one-month serial-transformation timetable, and Cakrapani quotes exactly this Sushruta passage in his commentary on Ca.Su.28.4 when setting out the transformation view. This is the textual basis MODERN writing invokes for the name ksira-dadhi-nyaya; Sushruta does not use that name and neither does Cakrapani when quoting him. Note Sushruta's timetable differs from the six days reported in Ca.Ci.15.
Where this term does work in the theory
One concept record names this term as one of its components, and glosses it there as follows.
- Dhatu Formation and the Three Models of Tissue Nutrition as Kshira-dadhi nyaya
- 'Milk-into-curd' analogy: the law of transformation. Each dhatu is wholly converted into the next, so nourishment is strictly serial.
Not to be confused with
- khale-kapota-nyāya
- Kṣīra-dadhi has the whole preceding dhātu convert into the next; khale-kapota has a common nutrient pool from which each dhātu draws its own fraction, with the dhātus never converting into one another. They are mutually exclusive as stated, which is why Cakrapāṇi weighs them against each other.
- kedārī-kulyā-nyāya
- Kedārī-kulyā is about the route and order of delivery; kṣīra-dadhi is about the identity of the substance being nourished. Cakrapāṇi says kedārī-kulyā is of equal force with khale-kapota, and treats both as alternatives to the transformation view.
- dhātu-pariṇāma
- Pariṇāma is the doctrine; kṣīra-dadhi-nyāya is a later label naming it by its simile. Using the label where the sources say pariṇāma-pakṣa obscures that Cakrapāṇi argued against it.
Renderings that do not hold
- milk to curd to butter to ghee. The name contains only kṣīra and dadhi. The extension to navanīta and ghṛta is a later elaboration, though WHO ISTA itself adopts it (ITA-2.6.19). Recording the four-stage version as 'the' simile misstates the compound.
- Law of Transformation. 'Law' implies a settled doctrine. In the commentary it is one contested pakṣa, and the strong form of it is refuted.
- Chakrapani's theory of tissue transformation. Cakrapāṇi reports and criticises this position; he does not hold it. Attributing it to him inverts the source.
Open questions
Recorded rather than resolved. Each one is something this entry cannot currently settle.
- Whether Dalhaṇa on Su.Sū.14 uses the name. No retrievable Sanskrit Sushruta-with-Dalhaṇa text was found.
- Which timetable the lexicon should record: Sushruta's one month, or the six days reported in Ca.Ci.15.
How to cite this entry
Age Ayurveda Nighantu, kṣīra-dadhi-nyāya
, https://nighantu.ageayurveda.com/lexicon/kshira-dadhi-nyaya/, CC BY 4.0.
The whole lexicon is downloadable from the index.
Machine-readable source: Markdown.
Data exported 2026-10-08.
Educational reference only. A term entry explains what a word means and how it has been translated. Nothing here is advice, and nothing here describes how any condition should be treated.