Mahabharata 3.211.31

सूतिकाग्निर्यदा चाग्निं संस्पृशेदग्निहोत्रिकम्इष्टिरष्टाकपालेन कार्या चाग्निमतेऽग्नये

sūtikāgniryadā cāgniṃ saṃspṛśedagnihotrikamiṣṭiraṣṭākapālena kāryā cāgnimate'gnaye

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