पादधिको ज्येष्ठः पादहीनः कनिष्ठः ॥ कZ_०२.२५.२० ॥
pādadhiko jyeṣṭhaḥ pādahīnaḥ kaniṣṭhaḥ
An increase by one quarter makes it “superior”; a decrease by one quarter makes it “inferior”.
It creates a simple, enforceable threshold for classifying strength/quantity, enabling consistent pricing, taxation, and penalties for short-measure.