Evil gotten, evil spent.

Wealth or advantage acquired through wrongdoing is likely to be spent in harmful, wasteful, or morally corrupt ways. Here “gotten” means acquired, and “evil” expresses a strong moral judgment.

It warns that illicit profit does not become respectable simply because it is later spent. The saying presents wrongful acquisition and wrongful expenditure as connected consequences rather than separate choices.

Use it when condemning money or advantage obtained by dishonest means and then squandered or put to harmful use. Because “evil” is a strong moral judgment, use it only where that judgment is intended. Its compressed phrasing suits proverbial or reflective writing.