"Those who live in glass houses should not throw stones" is a proverb used in several European countries. It means that one should not criticize others, because everybody has faults of one kind or another.
Another less common but accurate meaning is: "One who isn't open to criticism should not criticize others."
See also
He who lives in a glass house - Check out a meme playlist by Short clips - https://www.youtube.com/watch?v=c4DmXMTxTGI&index=1&list=PLgnxgfMPQhicAsUhieChI6QY0H-Zn_2TY.
- Pot calling the kettle black
- The Mote and the Beam