हरितालमनःशिलाहिङ्गुलुकचूर्णानामन्यतमेन कुरुविन्दचूर्णेन वा वस्त्रं सम्यूह्य यत्परिमृद्नन्ति तत्परिमर्दनम् ॥ कZ_०२.१४.४८ ॥
haritālamanaḥśilāhiṅgulukacūrṇānām anyatamena kuruvindacūrṇena vā vastraṃ samyūhya yat parimṛdnanti tat parimardanam
When, using cloth charged with powders such as orpiment, realgar, cinnabar, or kuruvinda-powder, they rub an article so that material is worn away, that is rubbing-away (parimardana).
The state should regulate and audit access to abrasives/consumables used in finishing, since they enable covert material removal.