Rain before seven, fine before eleven.
There's many a good tune played on an old fiddle.
Give credit where credit is due.
When the oak is before the ash, then you will only get a splash; when the ash is before the oak, then you may expect a soak.
A stitch in time saves nine Link to proverb.
As thick as thieves Link to proverb.
A barking dog never bites Link to proverb.