פּירוש אויף מלאכי 1:12

and its expression is “Its food is contemptible.” The expression of the altar that is fluent on your lips is always, “Its food is contemptible”; that [is all] you say about it. You have already spread this slander, and you have strongly attached this expression to My altar.

its food its food.

“You profane it when you say, the table of God, etc.” [1:12]. However, you Israel profane the Holy One when you say that the altar is the table of God and has become impure with fat and blood and with the words of their lips. The altar is embarrassed along with all of his food.¹⁰Rashi, Malachi, 1:12.