(Devarim 20:15) "Thus shall you do to all the cities that are distant": The distant ones (i.e., those not of the seven nations) are subsumed in this law (to spare the women and children), but those that are near (i.e., the seven nations) are not subsumed in this law. ( Ibid . 16) "But from the cities of these people (the seven nations) … you shall not allow any soul to live": (But you shall slay them) by the sword. ( Ibid . 17) "But you shall utterly destroy them": I might think that their spoil were forbidden to you; it is, therefore, written ( Ibid . 6:11) "and houses full of all good." "the Chitti, the Emori, the Canaani, etc." "as the L-rd your G-d commanded you": to include the Girgashi.
Sifrei Devarim 201
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