पञ्चाशद्भागो मानस्रावो द्रवाणाम् ॥ कZ_०२.१९.४४ ॥
pañcāśadbhāgo mānasrāvo dravāṇām
For liquids, the allowable seepage loss (māna-srāva) shall be 1/50.
It creates a measurable tolerance band: inspectors can distinguish natural loss from deliberate under-filling, reducing arbitrary enforcement.