Deuteronomy 25:4 (a) This word has two meanings. The first is that we are to know that the servant of GOD, which is represented by the ox, should be free to tell the story of GOD's grace in his own way, and not be hindered by any rules or regulations of men. It also means that the servant of GOD is entitled to receive the benefits in a material way of his ministry. He should be given remuneration for his work. He is entitled to receive the food, the clothing and the other necessities of life because of his ministry. (See also1Co 9:9; 1 Timothy 5:18).

Bibliography Information
Watson, Walter. Entry for 'Muzzle'. Wilson's Dictoinary of Bible Types. https://www.studylight.org/dictionaries/eng/wdt/m/muzzle.html. 1957.

Bible Dictionaries Muzzle

Wilson's Dictionary of Bible Types

Bible Dictionaries
Muzzle