कालायसपिण्डः पञ्चभागक्षयः ॥ कZ_०४.१.४१ ॥
kālāyasapiṇḍaḥ pañcabhāgakṣayaḥ
কালায়স (লোহা) পিণ্ডে এক-পঞ্চমাংশ (২০%) ছাড়/ক্ষয় গণ্য হবে।
The state recognizes material-specific processing loss/impurity risks and encodes them into uniform valuation rules to reduce bargaining and manipulation.