'Muzzle' in the Bible

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

For it is written in the law of Moses, Thou shalt not muzzle the ox when he treadeth out the corn. Is it for the oxen that God careth,

For the scripture saith, Thou shalt not muzzle the ox when he treadeth out the corn. And, The laborer is worthy of his hire.