Mahabharata 3.211.4

ऊष्मा चैवोष्मणो जज्ञे सोऽग्निर्भूतेषु लक्ष्यतेअग्निश्चापि मनुर्नाम प्राजापत्यमकारयत्

ūṣmā caivoṣmaṇo jajñe so'gnirbhūteṣu lakṣyateagniścāpi manurnāma prājāpatyamakārayat

Our plain-language meaning of this verse is waiting for scholar review.