Anandakanda 2.1.224

2.1.224

evaṃ trivāraṃ dhamanātsattvaśeṣaṃ samāharet /
<dvitīyaḥ prakāraḥ>
bhūnāgamṛttikāṃ bhāṇḍe bhūnāgaiḥ saha nikṣipet //

Thus, by blasting three times, one should extract the remainder of the essence.
<Second method>
One should place the earthworm soil together with earthworms into a vessel.