'Muzzle' in the Bible

“Do not muzzle an ox while it treads out grain.

For the choir director, for Jeduthun. A Davidic psalm.I said, “I will guard my waysso that I may not sin with my tongue;I will guard my mouth with a muzzleas long as the wicked are in my presence.”

For it is written in the law of Moses, Do not muzzle an ox while it treads out grain. Is God really concerned with oxen?

For the Scripture says:Do not muzzle an oxwhile it is treading out the grain, and,the worker is worthy of his wages.