Acts 11:8

I said, 'No, no, my Lord; nothing common or unclean has ever passed my lips.'

Romans 14:14

I know, I am certain in the Lord Jesus, that nothing is in itself unclean; only, anything is unclean for a man who considers it unclean.

Mark 7:2

They noticed that some of his disciples ate their food with 'common' (that is, unwashed) hands.

1 Corinthians 7:14

For the unbelieving husband is consecrated in the person of his wife, and the unbelieving wife is consecrated in the person of the Christian brother she has married; otherwise, of course, your children would be unholy instead of being consecrated to God.

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
They noticed that some of his disciples ate their food with 'common' (that is, unwashed) hands.
Romans 14:14
I know, I am certain in the Lord Jesus, that nothing is in itself unclean; only, anything is unclean for a man who considers it unclean.