People who live in glass houses shouldn't throw stones.
Prov. You should not criticize other people for having the same faults that you yourself have. Jill: Richard sure was drinking a lot at the office party. Jane: I noticed you had quite a few cocktails yourself. People who live in glass houses shouldn't throw stones.
people who live in glass houses shouldn't throw stones
One who is open to criticism should not criticize others, as in It's stupid of Mike to mention his opponent's accepting donations from lobbyists-people who live in glass houses! This proverb is so well known that it is often shortened. [Late 1300s] Also see pot calling the kettle black.