शुल्बं तारं वा गर्भः पत्त्राणां संघात्येषु क्रियते ॥ कZ_०२.१४.३० ॥
śulbaṃ tāraṃ vā garbhaḥ pattrāṇāṃ saṃghāṭyeṣu kriyate
पत्रांच्या थरांनी बनवलेल्या संघात (दाबून घडवलेल्या गाठी) यांमध्ये आतला ‘गर्भ/कोर’ म्हणून तांबे किंवा तार ठेवतात/करतात.
Placing a cheaper metal core (copper/wire) inside a laminated leaf structure so the outside looks precious while the inside is not.
Assaying must test interior composition (cut tests, drilling, density checks), not only surface appearance.