Shiva Purana

siva.sh/siva-purana/rudra-samhita/120/51

इत्थं यदाऽब्रवीद्वह्निस्तदा त्वं मुनिसत्तम ।। शंकरप्रेरितः प्रात्थ हृदाग्निमुपकारकः ।। ५१ ।।

sanskrit

O excellent sage, when fire said like this, you, urged by Śiva, said thus in order to help Agni.

english translation

itthaM yadA'bravIdvahnistadA tvaM munisattama || zaMkarapreritaH prAttha hRdAgnimupakArakaH || 51 ||

hk transliteration by Sanscript