Shiva Purana

siva.sh/siva-purana/uma-samhita/9/34

लौहकुम्भे विनिःक्षिप्ताः श्वसन्तश्च शनैःशनैः ।। महाग्निना प्रपच्यंते स्वपापैरेव मानवाः।। ३४।।

sanskrit

They are put into iron pots. They breathe hard and slow. They are scorched by great fire, as if by their own sins.

english translation

lauhakumbhe viniHkSiptAH zvasantazca zanaiHzanaiH || mahAgninA prapacyaMte svapApaireva mAnavAH|| 34||

hk transliteration by Sanscript