וְהוֹרִ֡דוּ זִקְנֵי֩ הָעִ֨יר הַהִ֤וא אֶת־הָֽעֶגְלָה֙ אֶל־נַ֣חַל אֵיתָ֔ן אֲשֶׁ֛ר לֹא־יֵעָבֵ֥ד בּ֖וֹ וְלֹ֣א יִזָּרֵ֑עַ וְעָֽרְפוּ־שָׁ֥ם אֶת־הָעֶגְלָ֖ה בַּנָּֽחַל׃
And the elders of that city shall bring down the heifer unto a rough valley, which may neither be plowed nor sown, and shall break the heifer’s neck there in the valley.
Targum Jonathan on Deuteronomy
and the sages of that city shall bring the heifer down into an uncultivated field, where the ground hath not been tilled by work, nor sowed; and let them there behead the heifer from behind her with an axe (or knife, dolch) in the midst of the field.