Albert Barnes Commentary Daniel 2:6

"But if ye show the dream and the interpretation thereof, ye shall receive of me gifts and rewards and great honor: therefore show me the dream and the interpretation thereof." — Daniel 2:6 (ASV)

But if ye show the dream - If you show what the dream was.

And the interpretation thereof - What it signifies. That is, they were to state the dream in such a way that Nebuchadnezzar would recognize it; and they were to give such an explanation of it as would commend itself to his mind as the true one. On this last point, he would doubtless rely much on their supposed wisdom in performing this duty, but it would also seem clear that it was necessary for the interpretation to be seen as a "fair" interpretation, or such as would be "fairly" implied in the dream. Thus, when Daniel made known the interpretation, he saw at once that it met all the features of the dream, and he admitted it to be correct.

So also when Daniel explained the handwriting on the wall to Belshazzar, he admitted the correctness of it, and loaded him with honors (Daniel 5:29). So when Joseph explained the dreams of Pharaoh, he at once saw the appropriateness of the explanation, and admitted it to be correct (Genesis 41:39–45); and so in the case above referred to , of Astyages respecting the dreams of his daughter (Herod. 1, cvii.; cviii.), he at once saw that the interpretation of the dreams proposed by the Magi accorded with the dreams, and took his measures accordingly.

Ye shall receive of me gifts, and rewards, and great honor - Intending to appeal to their highest hopes to induce them, if possible, to disclose the meaning of the dream. He specifies no particular rewards, but makes the promise general; and the evident meaning is that, in such a case, he would bestow what befitted a monarch like him to give. That the usual rewards in such a case were of a kind adapted to stimulate the most vigorous exertions of their powers may be seen from the honor which he conferred on Daniel when he made known the dream (Daniel 2:48), and from the rewards which Belshazzar conferred on Daniel for making known the interpretation of the writing on the wall (Daniel 5:29): Then commanded Belshazzar, and they clothed Daniel with scarlet, and put a chain of gold about his neck, and made a proclamation concerning him, that he should be the third ruler in the kingdom. (Esther 6:7–9).