Rashi on Deuteronomy 20:17/רש"י על דברים כ׳:י״ז

1כאשר צוך [BUT THOU SHALT DOOM THEM TO DESTRUCTION: THE HITTITES, … AND THE JEBUSITES,] AS [THE LORD THY GOD] HATH COMMANDED THEE — The words: “as God hath commanded thee” are intended to include the Girgashites (the seventh nation that is not mentioned here) (Sifrei Devarim 201:4).