Mahabharata 13.84.80
पवित्राणां पवित्रं हि कनकं द्विजसत्तमअग्नीषोमात्मकं चैव जातरूपमुदाहृतम्
pavitrāṇāṃ pavitraṃ hi kanakaṃ dvijasattamaagnīṣomātmakaṃ caiva jātarūpamudāhṛtam
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book