He who has a glass roof on his own house, must not throw stones at others.
More Danish Proverbs:
Under white ashes lie often glowing embers.Danish
One piece of good advice is better than a bag full.
Danish
Trust everybody, but thyself most.
Danish
Throw no stones at a sleeping dog.
Danish
He is nearest a thing, who has it in his hands.
Danish
Stop, look and listen.
Danish