Acts 11:8

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

Romans 14:14

I know and am persuaded in the Lord Jesus, that nothing common by itself; except to any one reckoning to be common, to that one it is common.

Leviticus 10:10

And to separate between the holy and between the unholy, and between the unclean and between the clean:

Leviticus 11:47

To separate between the unclean and between the clean, and between the beast being eaten and between the beast which shall not be eaten.

Ezra 9:11-12

Which thou didst command by the hand of thy servants the prophets, saying, The land which ye are coming in to inherit it being a land of uncleanness in the uncleanness of the people of the lands in their abominations which filled it from mouth to mouth in their pollution.

Hosea 9:3

They shall not dwell in the land of Jehovah; and Ephraim turned back to Egypt, and in Assur they shall eat the unclean thing.

Mark 7:2

And having seen some of his disciples with common hands, that is, unwashed, eating loaves, they rebuked.

1 Corinthians 7:14

For the unbelieving husband was consecrated in the wife, and the unbelieving wife was consecrated in the husband: for then are our children unclean; and now are they 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 having seen some of his disciples with common hands, that is, unwashed, eating loaves, they rebuked.
Romans 14:14
I know and am persuaded in the Lord Jesus, that nothing common by itself; except to any one reckoning to be common, to that one it is common.