The Great Epic of the Bhārata dynasty 5.33.2

5.33.2

prahito dhṛtarāṣṭreṇa dūtaḥ kṣattāramabravīt |
īśvarastvāṃ mahārājo mahāprājña didṛkṣati || 2 ||

"Vaisampayana said, 'King Dhritarashtra endued with great wisdom (then) said to the orderly-in-waiting, 'I desire to see Vidura. Bring him here without delay.' Despatched by Dhritarashtra, the messenger went to Kshatri and said, 'O thou of great wisdom, our lord the mighty king desireth to see thee.' Thus addressed, Vidura (set out and) coming to the palace, spoke unto the orderly, 'Apprise Dhritarashtra of my arrival.' Thereupon the orderly went to Dhritarashtra, and said, O, foremost of kings, Vidura is here at thy command. He wisheth to behold thy feet.