Shiva Purana

siva.sh/siva-purana/rudra-samhita/26/49

अग्नौ शरीत्यागस्ते पूर्वमेव प्रतिश्रुतः ।। तदुपायं वदामि त्वां तत्कुरुष्व न संशयः ।।४९।।

sanskrit

That you would cast off your body in the fire has been foretold. I shall tell you the means thereof. You will certainly carry it out.

english translation

agnau zarItyAgaste pUrvameva pratizrutaH || tadupAyaM vadAmi tvAM tatkuruSva na saMzayaH ||49||

hk transliteration by Sanscript