Every recipe needs measuring cups. The Yogataraṅgiṇī, an Ayurvedic compendium composed by Trimallabhaṭṭa in Samvat 1703, contains some of the most careful metrology in the tradition — a complete ladder of weights running from a single seed up to the pala, with synonyms for every step, and then the exact ratios that make a medicated oil come out right.
The ladder of weights
The text lays out the system in a single unbroken chain, each unit defined by the ones below it.
Six of those (rājikās) make one rājikā. Three rājikās are called a sarṣapa by the learned. Eight sarṣapas are called a yava; four of those make a guñjā. Six raktikās make a māṣaka, also called a hemadhānaka. Four māṣas make a śāṇa, also called a dharaṇa. Two kolas make a karṣa... Two karṣas make an ardha-pala; two śuktis make a pala.
The same verse piles on synonyms — akṣa, picu, pāṇitala for one unit; karṣa, karamadhya, haṃsapada for another — because a practitioner meeting the same measure under a different name in a different text had to recognize it. This is a working reference, designed to be consulted at the dispensary.
The ratios that make the medicine
Measurement was not just about knowing the units; it was about the proportions that determined whether a preparation worked. The Yogataraṅgiṇī gives the classical ratios for cooking medicated fats, citing Caraka by name.
Where the measure of medicinal substances is not specified, the fat (sneha) should be four times the paste (kalka), and the decoction (kvatha) should be four times the fat. In the preparation of fat, water should always be given four times the substance to be decocted. For soft substances, water should be given fourfold; for hard substances, eightfold water is prescribed. For a hard substance within a hard substance, water should be sixteen parts.
The ratios escalate with hardness — four, eight, sixteen — and the text even tells you when the oil is done: when a drop of the paste rolled between the fingers forms a wick and makes no sound in the fire.
A practical science
The Yogataraṅgiṇī is the kind of text that shows Ayurveda at its most engineering-minded: standardization, verification, and a refusal to leave quantities vague. It is a pharmacist's manual, copied and used, that made the medicine reproducible — one seed at a time.