Parashas Masei · Passuk 35:11 · TT note 3
Chabad.org — English translation + Rashi
Torah Temimah points to Makkos 8b (TT note on “מַכֵּה נֶפֶשׁ”).
English: “One who strikes a person” — excluding one who wounds his father unintentionally. You might have thought that since for an intentional wound [of a parent] he is liable to death, for an unintentional one he should go into exile; the verse teaches us [that he does not].
Halakhic exclusion — wounding a parent unintentionally does not trigger exile.
The obligation of exile applies only to one who kills a person (nefesh), not to one who merely wounds a parent by accident, even though the intentional parallel is a capital crime.