अप्सु निष्ठ्यूतास्तैलवद्विसर्पिणः षङ्कमलग्राहिणश्च ताम्ररूप्ययोः शतादुपरि वेद्धारः ॥ कZ_०२.१२.०३ ॥
apsu niṣṭhyūtās tailavad visarpiṇaḥ ṣaṅkamalagrāhiṇaś ca tāmrarūpyayoḥ śatād upari veddhāraḥ
若吐入水中,(其物)若如油般扩散,并形成或抓取如海螺或莲花般的纹样,则为一种用于穿刺/检验(试金)的物质,可得铜或银,超过一百(单位)。
Because it is low-cost, repeatable, and deployable in remote sites—supporting quick screening before committing state labour, guards, and smelting capacity.