Exodus 21:29-30

29But perhaps that bull has attacked people before. Perhaps someone warned the owner about this, but the man did not keep the bull in a safe place. If that happens, and the bull kills someone, you must kill the bull. You must also punish the bull's owner with death.

30But if the dead person's family demands money, the man can give them money instead of his life. He must pay them what they ask for.