Exodus 21:32
"If the ox shall push a manservant or a maidservant; he shall give unto their master thirty shekels of silver, and the ox shall be stoned."
Cross References (ranked by relevance)
Matthew 26:15
And said unto them, What will ye give me, and I will deliver him unto you? And they covenanted with him for thirty pieces of silver.
Philippians 2:7
But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:
Genesis 37:28
Then there passed by Midianites merchantmen; and they drew and lifted up Joseph out of the pit, and sold Joseph to the Ishmeelites for twenty pieces of silver: and they brought Joseph into Egypt.