Exodus 21:32

If the ox shall push a manservant or a maid-servant, the injury resulting in death, he, the owner of the vicious brute, shall give unto their master thirty shekels of silver, probably the usual market price of a slave, and the ox shall be stoned. Thus we also, in passing judgment upon any trespass, distinguish between sins of weakness and sins of malice, between transgressions by neglect, by mistake, and by criminal intent, being very careful not to accuse anyone unjustly.