कालायसपिण्डः पञ्चभागक्षयः ॥ कZ_०४.१.४१ ॥
kālāyasapiṇḍaḥ pañcabhāgakṣayaḥ
Un lingot (masse) de fer (kālāyasa) doit être réduit d’un cinquième (20 %) [comme perte/insuffisance admissible].
The state recognizes material-specific processing loss/impurity risks and encodes them into uniform valuation rules to reduce bargaining and manipulation.