אִם־אַחֶ֖רֶת יִֽקַּֽח־ל֑וֹ שְׁאֵרָ֛הּ כְּסוּתָ֥הּ וְעֹנָתָ֖הּ לֹ֥א יִגְרָֽע׃
만일 상전이 달리 장가를 들지라도 그의 의복과 음식과 동침하는 것은 끊지 못할 것이요
Sforno on Exodus
לא יגרע, one does not have the right to marry more than one woman unless able to provide for them not at the expense of reducing the first wife’s allowance. (Yevamot 65)
Rashbam on Exodus
שארה, her provisions (food) as in Micah 3,3ואשר אכלו שאר עמי, “the ones who devoured the flesh of my people.”