תִּטְחַ֣ן לְאַחֵ֣ר אִשְׁתִּ֑י וְ֝עָלֶ֗יהָ יִכְרְע֥וּן אֲחֵרִֽין׃
biarlah istriku menggiling bagi orang lain, dan biarlah orang-orang lain membungkuk di atasnya.
Ibn Ezra
The Dissenters claim that the passage one may not take for security the lower millstone, nor the upper millstone is juxtaposed to the previous verse on account of “gladden his wife” [: 5], and that it is an allusion to sexual intercourse (in other words, he may not withhold sex) — but this is vacuous inanity. They offer for proof the verse “let my wife grind unto another” [Job 31: 10], which I have already explained. The true meaning is the literal one: It is forbidden for someone to take a millstone as security. The sentence fails to specify its subject, as in “he told Joseph” [Genesis 48: 1], “she bore her to Levi” [Exodus 26: 59], and many similar instances. In all cases the implicit subject is assumed: “ the speaker spoke to Joseph”, “ the mother bore her to Levi”, etc.
Rashi
at the end of the days Heb. לְקֵץ הַיָמִין, like בְּאַחֲרִית הַיָמִים. We cannot interpret הַיָמִין as an expression of the right hand, because it is mentioned in the Large Masorah among the six words that are unusual because they have a final “nun” at the end of the word, which serves instead of a “mem,” and there is none like them, e.g. (Job 31:10): “and may others (אֲחֵרִין) kneel upon her;” (ibid. 24:22): “and he is not sure of life (בַּחַיִין)” (Ezek. 4:9): “take yourself wheat (חִטִין)”; (ibid. 26: 18): “Now the isles (הָאִיִן) will tremble;” (Prov. 31:3): “to the pleasures of kings;” (here): “to the end of the days (הַיָמִין).”
Kli Yakar
He shall not pour oil on it. Even though “minchah” [offering] is feminine, nonetheless it uses the masculine form “alav” [on it/him] because it refers to the flour which is masculine. And He commanded to take specifically flour because immediately after grinding it becomes flour, as it is written Grind flour (Isaiah 47:2). And we also find the language of grinding in this matter, as it is written And he was grinding in the prison house (Judges 16:21), and it is written Let my wife grind for another (Job 31:10). Therefore it says it is a meal-offering of jealousies — that is, the flour that comes after grinding, and this offering is a reminder of sin, meaning it reminds of the sin of the woman’s “grinding” [euphemism for infidelity]. And regarding what Ramban questioned about why it says here it/he is [masculine] a meal-offering of jealousies and afterward says it/she is [feminine] a meal-offering of jealousies, it seems there is no difficulty because here it speaks of the time when the offering is in the hand of the husband, as it says and he shall bring his offering, it writes “hu” [masculine] because in his hand is the rod of His anger (Isaiah 10:5). But afterward when it says “and place in her hands the meal-offering of remembrance,” it writes it/she is a meal-offering of jealousies because in her hand is the rod of her anger. And the simple explanation is that in this verse the flour is not mentioned, therefore it says “hi” [feminine] referring to the meal-offering.