Rasendracudamani 16.40

16.40

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ghanodbhūtaṃ sattvaṃ palaparimitaṃ viṃśatipuṭe rase catvāriṃśat parikalitacāraṃ ca jaritam /
payaḥpaṅkaprāyaṃ dviguṇajaritābhre vararase yadā tadvikṣiptaṃ rasitarasarūpaṃ saninadam //

[When] essence produced from mica, measuring a pala, is digested in twenty puṭas with forty movements arranged in the mercury,
when that is cast into the excellent mercury containing digested double-mica, resembling milky mud, it takes the form of buzzing mercury with sound.