וְאֶת־כָּל־שְׁלָלָ֗הּ תִּקְבֹּץ֮ אֶל־תּ֣וֹךְ רְחֹבָהּ֒ וְשָׂרַפְתָּ֨ בָאֵ֜שׁ אֶת־הָעִ֤יר וְאֶת־כָּל־שְׁלָלָהּ֙ כָּלִ֔יל לַיהוָ֖ה אֱלֹהֶ֑יךָ וְהָיְתָה֙ תֵּ֣ל עוֹלָ֔ם לֹ֥א תִבָּנֶ֖ה עֽוֹד׃
tu en réuniras toutes les richesses au centre de la place, et tu livreras au feu la ville et tous ses biens, sans réserve, en l’honneur de l’Éternel, ton Dieu. Elle restera une ruine éternelle, elle ne sera plus rebâtie.
Rashi
לה' אלהיך [AND THOU SHALT BURN WITH FIRE THE CITY …] FOR THE LORD THY GOD — i.e. for the honor of His name and for His sake.
Da'at Zekenim
כליל לה' אלוקיך, “as a holocaust (completely) to the Lord your G–d.” You are to do this in public so that everyone knows that your motivation is not to enrich yourself by doing so. [According to an opinion in the Talmud, there is no record of this legislation ever having to have been enforced. Ed.]
Ibn Ezra
entirely All of it belongs to God your God, i.e., you must burn it in fire for the glory of God .