Anandakanda 1.4.262

1.4.262

kṣiptvā puṭed aṣṭavāraṃ tattāmraṃ hemni vāhayet /
<pañcamaṃ tīkṣṇabhasmasiddhaṃ hemabījam>
athavā mārayettīkṣṇaṃ tīkṣṇatulyaṃ ca hiṃgulam //

one should calcine it eight times, and project that copper into gold.
<The fifth gold seed, prepared with steel ash>
Or one should kill steel: [taking] cinnabar equal to the steel,