कालपर्वतकं रक्तकालमनवद्यवर्णं वा ॥ कZ_०२.११.५१ ॥
kālaparvatakaṃ raktakālamanavadyavarṇaṃ vā
‘কালপৰ্বতক’ ৰঙা-কলীয়া; অথবা তাৰ বৰ্ণ নিৰ্দোষ/নিৰ্মল।
It creates a reject/accept threshold—goods failing visible-quality benchmarks can be refused, repriced, or penalized in supplier settlements.