Charles Ellicott Commentary Daniel 2:10

"The Chaldeans answered before the king, and said, There is not a man upon the earth that can show the king`s matter, forasmuch as no king, lord, or ruler, hath asked such a thing of any magician, or enchanter, or Chaldean." — Daniel 2:10 (ASV)

No king. —A further argument of the wise men, offering a delicate flattery to the king, and, at the same time, assuming as a proof of their wisdom, that all possibilities had already been submitted to them. “Because no king,” they say, “has left any precedent for such a request, therefore the thing is impossible.”