ישעיהו, פרק ל׳, פסוק כ״ד

In the future era of extraordinary blessing and abundance, the prosperity of the land will be so great that it will elevate the daily lives of even the lowliest creatures. The beasts of burden that toil in the fields will no longer be fed basic scraps, but will instead enjoy premium nourishment typically reserved for human beings.

The working animals that plow and cultivate the soil, specifically trained oxen and young donkeys [מלבי״ם], will be the primary beneficiaries of this agricultural wealth [מצודת דוד, רד״ק]. Rather than their usual diet, these animals will be fed a rich mixture of fodder, grains, and legumes [מצודת ציון, שד״ל, ביאור שטיינזלץ]. Commentators offer different perspectives on how this special feed is prepared. One approach suggests it is a fermented or seasoned blend, where the grain is mixed with water, boiled, and slightly fermented to help fatten the animals, or enhanced with salt to add flavor and promote their overall health [אברבנאל, שד״ל, רש״י]. Another perspective maintains that the mixture simply consists of exceptionally pure and clean grain [רד״ק, מלבי״ם].

The true scale of this future blessing is evident in the careful preparation of the animals' food. The grain will be processed using agricultural tools designed to toss the harvest into the wind, thoroughly winnowing it to remove all chaff and waste [רש״י, מצודת ציון, רד״ק]. The primary approach among commentators is that this highlights a time of overwhelming agricultural plenty. Because of the massive crop yields, people will no longer feed their working animals simple straw. Instead, they will provide them with carefully sifted, thoroughly cleaned grain that matches the quality and standard of human meals [אברבנאל, רד״ק, מצודת דוד, מלבי״ם].