Luke 15:15-16

And he went and let himself to one of the people of that country, who sent him into his fields to feed swine.

2 Peter 2:22

But it is happened to them according to the true proverb, The dog is returned to his own vomit, and, The swine that was washed to her wallowing in the mire.

Treasury of Scripture Knowledge

Summary

And the swine, because it divideth the hoof, yet cheweth not the cud, it is unclean unto you: ye shall not eat of their flesh, nor touch their dead carcase.

Bible References

The swine

Luke 15:15
And he went and let himself to one of the people of that country, who sent him into his fields to feed swine.
2 Peter 2:22
But it is happened to them according to the true proverb, The dog is returned to his own vomit, and, The swine that was washed to her wallowing in the mire.