פּירוש אויף מלאכי 1:10

O that there were even one among you that would close the doors If only a good man would arise among you who would close the doors of My sanctuary so as not to allow this abominable sacrifice there.

and that you would not kindle fire on My altar in vain with fire offerings with which I am not placated, for I have no desire in you. And our Sages expounded in Torath Kohanim (7: 154): If a person says to his friend, “Close this door for me,” he does not demand compensation for it; [or if he says,] “Light this candle for me,” he does not request compensation for it. But you - who is there among you who closed My doors, gratis? Neither did you kindle fire on My altar gratis. Surely, things that are customarily done for compensation you did not do gratis. Therefore, I have no desire in you.

“If only you would lock the Temple doors and not kindle fires on my altar for nothing” [1:10]. The prophet said to the priests. Which one of you will be a good man and stand up to lock the doors of the Temple and altar, that you should not allow unworthy sacrifices with defects, to be brought. You should not light a fire on the altar for nothing. I, God, do not desire your sacrifices from Israel and also not from you priests, and also that you should also not bring any sacrifices or meal offerings.⁸Rashi, Malachi, 1:10.