New Revised Standard Version
If the ox has been accustomed to gore in the past, and its owner has been warned but has not restrained it, and it kills a man or a woman, the ox shall be stoned, and its owner also shall be put to death.

Contemporary English Version
Suppose you own a bull that has been in the habit of attacking people, but you have refused to keep it fenced in. If that bull kills someone, both you and the bull must be put to death by stoning.

New American Bible
But if an ox was previously in the habit of goring people and its owner, though warned, would not watch it; should it then kill a man or a woman, not only must the ox be stoned, but its owner also must be put to death.

Douay-Rheims Bible
But if the ox was wont to push with his horn yesterday, and the day before, and they warned his master, and he did not shut him up, and he shall kill a man or a woman: then the ox shall be stoned, and his owner also shall be put to death.

But if the ox was wont to push with his horn yesterday, and the day before, and they warned his master, and he did not shut him up, and he shall kill a man or a woman: then the ox shall be stoned, and his owner also shall be put to death.

his owner also

Deuteronomy 21:1-9 When there shall be found in the land, which the Lord thy God will give thee, the corpse of a man slain, and it is not known who is guilty of the murder, . . .