Leviticus 7:19

'And the flesh which cometh against any unclean thing is not eaten; with fire it is burnt; as to the flesh, every clean one doth eat of the flesh;

Leviticus 11:24-39

'And by these ye are made unclean, any one who is coming against their carcase is unclean till the evening;

Numbers 19:11-16

He who is coming against the dead body of any man -- is unclean seven days;

Luke 11:41

But what ye have give ye as alms, and, lo, all things are clean to you.

Acts 10:15-16

and there is a voice again a second time unto him: 'What God did cleanse, thou, declare not thou common;'

Acts 10:28

And he said unto them, 'Ye know how it is unlawful for a man, a Jew, to keep company with, or to come unto, one of another race, but to me God did shew to call no man common or unclean;

Romans 14:14

I have known, and am persuaded, in the Lord Jesus, that nothing is unclean of itself, except to him who is reckoning anything to be unclean -- to that one it is unclean;

Romans 14:20

for the sake of victuals cast not down the work of God; all things, indeed, are pure, but evil is to the man who is eating through stumbling.

2 Corinthians 6:17

wherefore, come ye forth out of the midst of them, and be separated, saith the Lord, and an unclean thing do not touch, and I -- I will receive you,

Titus 1:15

all things, indeed, are pure to the pure, and to the defiled and unstedfast is nothing pure, but of them defiled are even the mind and the conscience;

Treasury of Scripture Knowledge

Summary

And the flesh that toucheth any unclean thing shall not be eaten; it shall be burnt with fire: and as for the flesh, all that be clean shall eat thereof.

Bible References

General references

Leviticus 11:24
'And by these ye are made unclean, any one who is coming against their carcase is unclean till the evening;
Numbers 19:11
He who is coming against the dead body of any man -- is unclean seven days;
Luke 11:41
But what ye have give ye as alms, and, lo, all things are clean to you.
Acts 10:15
and there is a voice again a second time unto him: 'What God did cleanse, thou, declare not thou common;'
Romans 14:14
I have known, and am persuaded, in the Lord Jesus, that nothing is unclean of itself, except to him who is reckoning anything to be unclean -- to that one it is unclean;
2 Corinthians 6:17
wherefore, come ye forth out of the midst of them, and be separated, saith the Lord, and an unclean thing do not touch, and I -- I will receive you,
Titus 1:15
all things, indeed, are pure to the pure, and to the defiled and unstedfast is nothing pure, but of them defiled are even the mind and the conscience;