Anandakanda 1.9.11

1.9.11

nikṣipetpakvamūṣāyāṃ garte dvābhyāṃ caturguṇam /
kākamācīdravaṃ dattvā nirudhyaināṃ kramāgninā //

one should place it in a fired crucible into a cavity four times [the size] of both. / Having added black nightshade juice and sealed it, over a gradual fire