Anandakanda 2.1.352

2.1.352

rasalohadoṣahāri khyātaṃ tadbhasma duritasaṃhṛtaye /
<aṅgāra>
śikhitrāḥ pāvakocchiṣṭā aṅgārāḥ koliśā matāḥ //

Its ash is celebrated for removing defects of mercury and metals and for destroying sins.
Charcoal:
Śikhitrāḥ, embers left by fire, are considered aṅgāras and koliśas;