Deuteronomy 2:34

מתם means MEN. — Of the spoil taken from Sihon it is stated (v. 35) בזזנו לנו, an expression denoting plunder (בזה), because then this was an object of desire to them, so that each man took spoil for himself. But when they came to the plundering of Og, they were already full to satiety, and it was contemptible in their eyes, so that they tore in pieces and cast away cattle and garments, and took only silver and gold. On this account it is said (Deuteronomy 3:7) בַּזֹּנוּ לנו which is an expression denoting "holding in contempt" (בזיון). Thus is it expounded in Siphre in the chapter beginning with "And Israel dwelt in Shittim״ (Numbers 25:1).

וַנִּלְכֹּ֤ד אֶת־כׇּל־עָרָיו֙ בָּעֵ֣ת הַהִ֔וא וַֽנַּחֲרֵם֙ אֶת־כׇּל־עִ֣יר מְתִ֔ם וְהַנָּשִׁ֖ים וְהַטָּ֑ף לֹ֥א הִשְׁאַ֖רְנוּ שָׂרִֽיד׃

And we took all his cities at that time, and devoted to destruction every city, the men, and the women, and the little ones; we left none remaining: