Anandakanda 1.7.116

1.7.116

oṃ namaścaṇḍavajrapāṇaye mahāyakṣasenādhipataye namaḥ suru suru mahāvidyābalāya svāhā /
<lohabhasma>
etāni lohapatrāṇi sūkṣmaṃ saṃcūrṇayettataḥ /
ayaḥpātre kāntacūrṇaṃ nikṣipya triphalārasaiḥ //

“Oṃ namaś caṇḍavajrapāṇaye mahāyakṣasenādhipataye namaḥ suru suru mahāvidyābalāya svāhā.”
<Iron calx>
One should then grind these iron plates into a fine powder. / Having placed the magnet iron powder into an iron vessel, with triphalā decoction,