Leviticus 15:4

Every couch whereon he lieth and every thing whereon he sitteth shall be unclean.

1 Corinthians 15:33

Be not deceived: malicious speakings corrupt good manners.

Ephesians 5:11

and have no fellowship with the unfruitful works of darkness: but rather rebuke them.

Titus 1:15

Unto the pure, are all things pure: but unto them that are defiled, and unbelieving, is nothing pure: but even the very minds and consciences of them are defiled.

Treasury of Scripture Knowledge

Summary

Every bed, whereon he lieth that hath the issue, is unclean: and every thing, whereon he sitteth, shall be unclean.

General references

Bible References

Be unclean

1 Corinthians 15:33
Be not deceived: malicious speakings corrupt good manners.
Ephesians 5:11
and have no fellowship with the unfruitful works of darkness: but rather rebuke them.
Titus 1:15
Unto the pure, are all things pure: but unto them that are defiled, and unbelieving, is nothing pure: but even the very minds and consciences of them are defiled.

General references

Leviticus 15:20
And all that she lieth or sitteth upon as long as she is put apart shall be unclean.