וַאֲשֶׁר֩ יָבֹ֨א אֶת־רֵעֵ֥הוּ בַיַּעַר֮ לַחְטֹ֣ב עֵצִים֒ וְנִדְּחָ֨ה יָד֤וֹ בַגַּרְזֶן֙ לִכְרֹ֣ת הָעֵ֔ץ וְנָשַׁ֤ל הַבַּרְזֶל֙ מִן־הָעֵ֔ץ וּמָצָ֥א אֶת־רֵעֵ֖הוּ וָמֵ֑ת ה֗וּא יָנ֛וּס אֶל־אַחַ֥ת הֶעָרִים־הָאֵ֖לֶּה וָחָֽי׃
as when a man goeth into the forest with his neighbour to hew wood, and his hand fetcheth a stroke with the axe to cut down the tree, and the head slippeth from the helve, and lighteth upon his neighbour, that he die; he shall flee unto one of these cities and live;
Targum Jonathan on Deuteronomy
(as for example) if any one goeth with his neighbour into the thicket to cut wood, and he driveth his hand with the axe to cut wood, and the iron flieth apart from the haft and lighteth on his neighbour that be die, he may flee to one of those appointed cities, and. save his life.
Targum Jerusalem
He who may go with his neighbour into the thicket to cut wood, and exerting himself with the axe to cut the wood, the iron separate from the handle, and fall upon his neighbour that he die, he may flee into one of those cities and live.