1,221. Muzzling a Working Animal
186:1 Whoever keeps an animal from eating while it is working was punished by lashes for violating the prohibition against muzzling an animal while it treads grain (Deuteronomy 25:4). While the Torah uses an ox as an example, the same rule applies to any animal, kosher or non-kosher. Likewise, it applies whether the animal is treading grain or performing some other agricultural task. One would be liable to lashes even if he only prevented the animal from eating by yelling at it.
186:2 A Jew who threshes grain would violate this law by muzzling the animal even if the grain and/or the animal belongs to a non-Jew.