1 Samuel 24:14
After whom is the king of Israel come out? after whom do you pursue? after a dead dog, after a flea.
Torrey's Topical Textbook—AKJV

2 Samuel 9:8
And he bowed himself, and said, What is your servant, that you should look on such a dead dog as I am?
Torrey's Topical Textbook—AKJV