A drudger gets a darg, and a drucken wife the drucken penny.

A willing labourer gets a day's work, and people fond of drink, however poor they are, contrive to get it some way or other.

A dry summer ne'er made a dear peck.

"Drought never bred dearth."—English.

A duck winna dabble aye in ae hole.

A dumb man hauds a'.

That is, figuratively, makes no disclosures.

A dumb man ne'er got land.

A dumb man wins nae law.

A loquacious advocate is more likely to gain his case than a taciturn one.