pot calling the kettle black, the

Idioms  

1. Accusing someone of faults that one has oneself, as in Tom's criticizing Dexter for dubious line calls is a case of the pot calling the kettle black, since Tom's about the worst line judge I've ever seen. This expression dates from the days of open-hearth cooking, which blackens practically all the utensils used. [Early 1600s]

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Example Sentences

“This would be a little bit the pot calling the kettle black. The North Koreans saying Americans untrustworthy? I’m not too worried about that,” Ms. Rice said.

From Washington Times