Jamieson, Fausset and Brown on Daniel 6:18

18. neither were instruments of music, &c.--Gesenius translates, "concubines." Daniel's mentioning to us as an extraordinary thing of Darius, that he neither approached his table nor his harem, agrees with Xenophon's picture of him as devoted to wine and women, vain, and without self-control. He is sorry for the evil which he himself had caused, yet takes no steps to remedy it. There are many such halters between good and bad, who are ill at ease in their sins, yet go forward in them, and are drawn on by others.