תּלמוד אויף ישעיהו 1:3

And two straps. etc.: It was taught in a baraisa, of donkey.... As a certain Galelien expounded to Rav Chisdah. (Issiah 1,3) The ox knows its master and the donkey knows its master's trough. Isreal does not know etc." Hashem says let the one who recognizes his master's trough come and exact punishment from the one who does not recognize his master's trough.

This is at variance with the statement of Rafram b. Pappa who said in the name of Rab Hisda : Since the Temple was destroyed, the firmament has never been seen in its purity ; as it is said, "I clothe the heavens with blackness, and I make sackcloth their covering" (Is. 1. 3).