It is ill fishing before the net.
More English Proverbs:
An illiterate king is a crowned ass.
English
Don't fall before you're pushed.
English
Don't drown the man who taught you to swim.
English
The first faults are theirs that commit them, the second theirs that permit them.
English
If you want to be happy for a year, plant a garden; If you want to be happy for life, plant a tree.
English