'Common or Unclean' in the Bible

But Peter said, Not so, Lord, for I have never eaten anything that is common or unclean.

And he said to them, You know that it is an unlawful thing for a man, a Jew to keep company with or to come near to one of another nation. But God has shown me not to call any man common or unclean.

But I said, Not so, Lord, for nothing common or unclean has at any time entered into my mouth.