'Common or Unclean' in the Bible

But Peter said, By no means, Lord for I have never at any time eaten of any thing common or unclean.

And he said unto them, Ye know how contrary it is to established usage, for a man who is a Jew to associate with or visit one of another nation; but God hath shewed me to call no man common or unclean.

But I said, By no means, Lord: for never yet hath any thing common or unclean entered into my mouth.