'Common or Unclean' in the Bible

And Peter said, In no wise, Lord; for I have never eaten anything common or unclean.

And he said to them, Ye know how it is unlawful for a Jew to be joined or come to one of a strange race, and to me God has shewn to call no man common or unclean.

And I said, In no wise, Lord, for common or unclean has never entered into my mouth.