Deuteronomy 23:25; Deuteronomy 27:5

Deuteronomy 23:25

25 When thou comest into the standing corn of thy neighbour, then thou mayest pluck the ears with thine hand; but thou shalt not move a sickle unto thy neighbour's standing corn.

Deuteronomy 27:5

5 And there shalt thou build an altar unto the LORD thy God, an altar of stones: thou shalt not lift up any iron tool upon them.