Deuteronomy 25:4

You shall not muzzle an ox as it is treading out your crops in the field

Other versions

King James Version

Thou shalt not muzzle the ox when he treadeth out the corn.

English Standard Version

"You shall not muzzle an ox when it is treading out the grain.

New International Version

Do not muzzle an ox while it is treading out the grain.