Luke 15:15-16

So, he went to work for one of the citizens of that country who sent him to his fields to feed his hogs.

2 Peter 2:22

It has happened to them like the true proverb [says], "The dog [throws up, and then] goes back and eats its own vomit," and "The hog that was all cleaned up [goes back] to wallowing in the mud."

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
So, he went to work for one of the citizens of that country who sent him to his fields to feed his hogs.
2 Peter 2:22
It has happened to them like the true proverb [says], "The dog [throws up, and then] goes back and eats its own vomit," and "The hog that was all cleaned up [goes back] to wallowing in the mud."