Anandakanda 2.5.8

2.5.8

<aśuddhakāntalohasevanajā doṣāḥ>
hṛtpīḍāṃ vahnidaurbalyaṃ mahārogānmṛtiṃ tathā /
karoti sevanālloham aśodhitam amāritam //

<Defects arising from the ingestion of unpurified loadstone> / From consuming unpurified and unkilled iron, / it produces heart pain, digestive weakness, severe diseases, and death.