Kabbalah Yesaya 1:3: Sha'arei Orah

Now, because “an ox knows its master and a donkey knows its master’s trough,”²³¹Isaiah 1:3 when this Divine quality strikes sinners, it strikes them with the ox (Shor-שור) and the donkey (Chamor-חמור). It therefore is fitting that the straps used by the earthly court to administer lashes be of the hide of an ox and donkey.²³²Talmud Bavli, Makkot 23a – “A certain Galilean interpreted before Rav Chisda: It is written (Isaiah 1:3), ‘An ox knows its owner and a donkey its master’s trough; but Israel does not know, My nation does not contemplate.’ The Holy One, blessed is He, said: Let the one who recognizes his master’s trough come and exact retribution from one who does not recognize his master’s trough.” For, when this Divine quality draws from HaShem’s-יהו"ה quality of might (Gevurah) and fear (Pachad) and becomes filled with them, it then destroys countries and smites all the people of the world.