अप्सु निष्ठ्यूतास्तैलवद्विसर्पिणः षङ्कमलग्राहिणश्च ताम्ररूप्ययोः शतादुपरि वेद्धारः ॥ कZ_०२.१२.०३ ॥
apsu niṣṭhyūtās tailavad visarpiṇaḥ ṣaṅkamalagrāhiṇaś ca tāmrarūpyayoḥ śatād upari veddhāraḥ
水に唾を落としたとき、油のように広がり、法螺貝または蓮華に似た模様を捉えて現すなら、それは穿孔/試金のための物質であり、銅または銀を百(単位)以上産出する。
Because it is low-cost, repeatable, and deployable in remote sites—supporting quick screening before committing state labour, guards, and smelting capacity.