Will all great Neptune's ocean wash this blood
Clean from my hand? No; this my hand will rather
The multidinous seas incarnadine,
Making the green one red.

Macbeth, II.ii.75-78.

--

Macbeth's Bane

The body of Duncan lay dead,

Still warm on his kingly white bed.

Washed her hands did she;

Cleaned his knife did he;

And the salty green waters were red.