הִנְנִ֛י מֵעִ֥יר עֲלֵיהֶ֖ם אֶת־מָדָ֑י אֲשֶׁר־כֶּ֙סֶף֙ לֹ֣א יַחְשֹׁ֔בוּ וְזָהָ֖ב לֹ֥א יַחְפְּצוּ־בֽוֹ׃
Behold, I will stir up the Medes against them, Who shall not regard silver, And as for gold, they shall not delight in it.
Rashi on Isaiah
Behold I stir up Media against them Darius the Mede assassinated Belshazzar. So Scripture states (Dan. 5:30): “On that very night, Belshazzar...was slain”; (ibid. 6:1) “And Darius the Mede acquired the kingdom.”
Rashi on Isaiah
and do not desire gold They do not care [for anything,] but to kill and to avenge the harm the kings of Babylon did to all the peoples.