דברים כ׳:י׳-י״ח

כי תקרב אל עיר. בְּמִלְחֶמֶת הָרְשׁוּת הַכָּתוּב מְדַבֵּר, כְּמוֹ שֶׁמְּפֹרָשׁ בָּעִנְיָן "כֵּן תַּעֲשֶׂה לְכָל הֶעָרִים הָרְחֹקֹת וְגוֹ'" (ספרי):

When you near a city. Scripture refers to a discretionary war, as stated explicitly below, “You shall deal this way with all the distant cities, etc.”

כל העם הנמצא בה. אֲפִלּוּ אַתָּה מוֹצֵא בָהּ מִשִּׁבְעָה אֻמּוֹת שֶׁנִּצְטַוִּיתָ לְהַחֲרִימָם, אַתָּה רַשַּׁאי לְקַיְּמָם (שם):

All the people found in it. Even if you should find in it members of the seven nations you are required to annihilate, you may allow them to survive.

למס ועבדוך. עַד שֶׁיְּקַבְּלוּ עֲלֵיהֶם מִסִּים וְשִׁעְבּוּד (שם):

Payers of tribute and your servants. Provided they accept the tribute payment and the servitude.

ואם לא תשלים עמך ועשתה עמך מלחמה. הַכָּתוּב מְבַשֶּׂרְךָ שֶׁאִם לֹא תַשְׁלִים עִמְּךָ סוֹפָהּ לְהִלָּחֵם בְּךָ אִם תַּנִּיחֶנָּה וְתֵלֵךְ (שם):

If it does not settle for peace with you, but engages in war against you. Scripture informs you that if it does not make peace with you, it will ultimately engage in war against you if you withdraw and depart.

וצרת עליה. אַף לְהַרְעִיבָהּ וּלְהַצְמִיאָהּ וְלַהֲמִיתָהּ מִיתַת תַּחֲלוּאִים (שם):

You shall lay siege to it. Even if this causes famine and thirst, and death from pestilence.

ונתנה ה' אלהיך בידך. אִם עָשִׂיתָ כָּל הָאָמוּר בָּעִנְיָן, סוֹף שֶׁה' נוֹתְנָהּ בְּיָדֶךָ (שם):

Adonoy your God will deliver it into your hand. If you fulfill everything mentioned here, God will ultimately deliver it into your hand.

והטף. אַף טַף שֶׁל זְכָרִים, וּמָה אֲנִי מְקַיֵּם "וְהִכִּיתָ אֶת כָל זְכוּרָהּ"? בַּגְּדוֹלִים (שם):

And children. Even the male children. How, then, is “Strike down all its males” fulfilled? With the adults.

כאשר צוך. לְרַבּוֹת אֶת הַגִּרְגָּשִׁי (שם):

As [God] commanded you. This adds the Girgashites.

למען אשר לא ילמדו. הָא אִם עָשׂוּ תְשׁוּבָה וּמִתְגַיְּרִין אַתָּה רַשַּׁאי לְקַבְּלָם (שם):

In order that they do not teach you. This infers that if they repent and convert, you may accept them.