यद्द्विगुणवास्तुकानां वा रूपे सीसरूपं प्रक्षिप्याभ्यन्तरमवच्छिन्दन्ति तदवच्छेदनम् ॥ कZ_०२.१४.४६ ॥
yad dviguṇavāstukānāṃ vā rūpe sīsarūpaṃ prakṣipyābhyantaram avacchindanti tad avacchedanam
When, in articles (including composite/laminated ones), they insert a lead-like substitute in the exterior form and cut out (remove) the interior material, that is cutting-out (avacchedana).
Visual conformity is not proof of value; the state must verify internal substance (weight, density, material tests) to prevent shell-and-core fraud.