Mahabharata 3.279.6

तस्यार्घ्यमासनं चैव गां चावेद्य स धर्मवित्किमागमनमित्येवं राजा राजानमब्रवीत्

tasyārghyamāsanaṃ caiva gāṃ cāvedya sa dharmavitkimāgamanamityevaṃ rājā rājānamabravīt

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