Anandakanda 1.9.13

1.9.13

<dvitīyaḥ prakāraḥ>
jīrṇasūtaṃ snukkṣīraiḥ samaṃ gandhaṃ vimardayet /
dinaṃ tato garbhayantre puṭe bhasmati pūrvavat //

<Second method>
One should grind the digested quicksilver with spurge latex and an equal amount of sulphur / for a day, and then, inside a garbha apparatus in an incinerator, it becomes ash as before.