sully your hands

sully (one's) hands

To partake in particularly underhanded, illicit, or illegal work or activities. The public can't be allowed to think that I, a senate hopeful, would ever sully my hands with a tax-evasion scheme such as that.
See also: hand, sully
Farlex Dictionary of Idioms.

sully your hands

FORMAL
If someone sullies their hands by doing something, they do something unpleasant or wrong. He had no intention of sullying his hands by playing politics. He would not sully his hands in trade. Note: To sully something means to stain it.
See also: hand, sully
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • sully
  • sully (one's) hands
  • dirty (one's) hands
  • dirty one's hands
  • get hands dirty and dirty hands; soil hands
  • soil (one's) hands
  • stolen fruit is (the) sweetest
  • stolen fruit is sweet
  • stolen fruit is sweetest
  • stolen pleasures are (the) sweetest