Acts 11:8

But I said, By no means, Lord; for nothing common or unclean has ever entered my mouth.

Romans 14:14

I know and am persuaded in the Lord Jesus, that there is nothing unclean of itself; but if any one thinks that any thing is unclean, to him it is unclean.

Mark 7:2

and when they saw some of his disciples eating bread with common, that is, with unwashed hands:

1 Corinthians 7:14

For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband; for if not, then are your children unclean; but now they are holy.

Treasury of Scripture Knowledge

Summary

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

Bible References

Common

Mark 7:2
and when they saw some of his disciples eating bread with common, that is, with unwashed hands:
Romans 14:14
I know and am persuaded in the Lord Jesus, that there is nothing unclean of itself; but if any one thinks that any thing is unclean, to him it is unclean.