אשר לא צויתי, to serve them.

בין דם לדם, according to the plain meaning, between one kind of murder and another kind of murder. [either knowing if the killing had been deliberate or not, or, killing a terminally sick person in great pain, for instance, and killing a terrorist without trial, both deliberate acts, of course. Ed.]

בין דין לדין, financial litigation,

נגע, skin afflictions described in Leviticus chapter 13.

איש נכרי, who is to lead you in battle;

אשר לא אחיך הוא, for he may seduce you to serve idols.

משנה התורה, my grandfather Rashi, explained this as meaning two separate Torah scrolls, [in line with the traditional interpretation of our sages in Sanhedrin 21, as distinct from Onkelos who derives the word משנה as related to שנן, (Deut. 6,7) to delve into the deeper meaning. Therefore,] Onkelos renders the word as פתשגן, a clearly worded interpretation, translation. [The king would have to have a version of the Torah at hand which a layman can understand without difficulty.]