Mahabharata 12.122.22

ततः पितामहो विष्णुं भगवन्तं सनातनम्संपूज्य वरदं देवं महादेवमथाब्रवीत्

tataḥ pitāmaho viṣṇuṃ bhagavantaṃ sanātanamsaṃpūjya varadaṃ devaṃ mahādevamathābravīt

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