Deuteronomy 25:4 in the World English Bible
You shall not muzzle the ox when he treads out the grain.
Context
3 Forty stripes he may give him, and not exceed: lest, if he should exceed, and beat him above these with many stripes, then thy brother should seem vile unto thee.
4 Thou shalt not muzzle the ox when he treadeth out the corn.
5 If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband’s brother shall go in unto her, and take her to him to wife, and perform the duty of an husband’s brother unto her.