He said these word to show that he was really sent (by Vidura). (He said), "O Yudhishthira, listen to what the learned Vidura) said to you.
ततः पुनरथोवाच ज्ञापकं पूर्वचोदितम्। युधिष्ठिर निबोधेदं संज्ञार्थं वचनं कवेः॥