The infinitive of a simple passive voice verb will not be associated with the word את. And when it is written ביום המשח אותו (in the day when he is annointed)⁶⁵, there is a homiletical interpretation. And moreover, whenever the word את comes after a verb in reflexive conjugation, the linguists are perplexed, while the sages of blessed memory will give a homiletical interpretation.

Throughout Ayelet Hashachar, the Malbim gives rules as to how the Torah is supposed to be written, but also often gives examples of these rules being broken. And whenever these rules are broken, the Malbim will say that the sages of blessed memory give a דרוש (homiletical interpretation). Rule 32 is the first example of this in Ayelet Hashachar.

Leviticus 6:13 says, זה קרבן אהרן ובניו אשר יקריבו ליהוה ביום המשח אתו עשירת האפה סלת מנחה תמיד מחציתה בבקר ומחציתה בערב (This is the offering of Aaron and of his sons, which they shall offer unto the LORD in the day when he is anointed: the tenth part of an ephah of fine flour for a meal-offering perpetually, half of it in the morning, and half thereof in the evening), where המשח (he is anointed) is associated with the word אותו, contradicting Rule 32. The homiletical interpretation is that the word אותו is there to teach that two high priests may not be anointed together⁶⁶.

footnotes: ⁶⁵ Leviticus 6:13. ⁶⁶ Malbim, HaTorah v’HaMitzvah Tzav 41.