Send him to the sea and he will not get water.
More Scottish Proverbs:
Nothing is difficile to a weill willed man.Scottish
Half a tale is enough to a wise man.
Scottish
He is well staikit thereben, that will neither borrow, nor len.
Scottish
A given Horse should not be lookt in the teeth.
Scottish
If ane will not, another will.
Scottish
Spit on the Stane, and it will be wet at the last.
Scottish