'Common or Unclean' in the Bible

And Peter said, By no means, Lord; for never ate I anything common or unclean.

And he said to them, Ye know that it is violating law for a man a Jew to join himself, or come near to a strange tribe: and God shewed me to call no man common or unclean.

And I said, By no means, Lord: for anything common or unclean never came into my month.