וְעַתָּה֩ לְכָה־נָּ֨א אָֽרָה־לִּ֜י אֶת־הָעָ֣ם הַזֶּ֗ה כִּֽי־עָצ֥וּם הוּא֙ מִמֶּ֔נִּי אוּלַ֤י אוּכַל֙ נַכֶּה־בּ֔וֹ וַאֲגָרְשֶׁ֖נּוּ מִן־הָאָ֑רֶץ כִּ֣י יָדַ֗עְתִּי אֵ֤ת אֲשֶׁר־תְּבָרֵךְ֙ מְבֹרָ֔ךְ וַאֲשֶׁ֥ר תָּאֹ֖ר יוּאָֽר׃
Итак, приди, прокляни мне этот народ; ибо они слишком сильны для меня; Я должен победить, чтобы мы поразили их и изгнали их из земли; ибо я знаю, что тот, кого ты благословляешь, благословен, а тот, кого ты проклинаешь, проклят.'
Rashi on Numbers
נכה בו (this may mean, “we may smite them”) I and my people may smite them. — Another explanation is that this is a Mishnaic Hebrew expression as in (Bava Metzia 105b) “he deducts (מנכה) for him something from the price”, so that it means: [perhaps I may be able] to reduce them a little in numbers (Midrash Tanchuma, Balak 4).
Ramban on Numbers
THAT WE MAY SMITE THEM — the meaning [of the plural “we,” although it is only Balaam who is speaking], is “I and Midian my ally.”31This is unlike Rashi, who explains the plural “we” as meaning “I and my people.”