He who digs someone else’s grave shall fall in it himself.
More Bulgarian Proverbs:
He that flies high falls low down.Bulgarian
A crow will never be a dove.
Bulgarian
Take a big bite, but don't say a big word.
Bulgarian
He, who buys what he does not need, sells what he needs.
Bulgarian
Better the grave than a slave.
Bulgarian
Life is a stairway - some are going up, others are going down.
Bulgarian