א֣וֹ בְאֵיבָ֞ה הִכָּ֤הוּ בְיָדוֹ֙ וַיָּמֹ֔ת מֽוֹת־יוּמַ֥ת הַמַּכֶּ֖ה רֹצֵ֣חַֽ ה֑וּא גֹּאֵ֣ל הַדָּ֗ם יָמִ֛ית אֶת־הָרֹצֵ֖חַ בְּפִגְעוֹ־בֽוֹ׃
或者出於敵意用手打他，以致那人死了，那打人的必須被處死，他就是殺人者；報血仇的人遇見殺人者的時候，就要把他處死。
Rashi
וגם בעליו יומת AND HIS OWNER ALSO SHALL BE PUT TO DEATH by a visitation of God. You might perhaps think he shall be punished by human agency (the judges)! Scripture, however, states, (Numbers 35:21) “he that smote him (a human being) shall surely be put to death; for he is a murderer” — the force of these last words is to intimate that for a murder committed by himself you shall put him to death (i. e. he suffers death by human agency as is the law regarding a murderer), but you shall not put him to death on account of a murder committed by his ox; this must be left to God (Sanhedrin 15b; cf. also Mekhilta).