Deut 23:26

כִּ֤י תָבֹא֙ בְּקָמַ֣ת רֵעֶ֔ךָ וְקָטַפְתָּ֥ מְלִילֹ֖ת בְּיָדֶ֑ךָ וְחֶרְמֵשׁ֙ לֹ֣א תָנִ֔יף עַ֖ל קָמַ֥ת רֵעֶֽךָ׃ ס

When you enter your neighbor’s grainfield, you may pluck the heads of grain with your hand, but you must not put a sickle to your neighbor’s grain.