Targum for Numbers 35:18

א֡וֹ בִּכְלִ֣י עֵֽץ־יָד֩ אֲשֶׁר־יָמ֨וּת בּ֥וֹ הִכָּ֛הוּ וַיָּמֹ֖ת רֹצֵ֣חַֽ ה֑וּא מ֥וֹת יוּמַ֖ת הָרֹצֵֽחַ׃

Or if he smote him with a weapon of wood in the hand, whereby a man may die, and he died, he is a murderer; the murderer shall surely be put to death.

Targum Jonathan on Numbers