Rasarnava 11.70

11.70

ūrdhvādhaś cāṣṭamāṃśena viḍaṃ dattvāpi jārayet
samajīrṇābhrakaḥ sūtaḥ śatavedhī bhavet priye //

Having applied alchemical flux above and below by an eighth part, one should digest it. / O dear one, mercury with an equal amount of digested mica becomes capable of hundredfold transmutation.