Mahabharata 8.30.65

पूज्यमाने पुरा धर्मे सर्वदेशेषु शाश्वतेधर्मं पाञ्चनदं दृष्ट्वा धिगित्याह पितामहः

pūjyamāne purā dharme sarvadeśeṣu śāśvatedharmaṃ pāñcanadaṃ dṛṣṭvā dhigityāha pitāmahaḥ

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