Parashas Chayei Sarah · Passuk 25:18
They dwelt from Chavilah, by Shur, which is close to Egypt, all the way to Ashur; they camped alongside all their kinsmen.
Rashi on Bereishis 25:18 (classical source on this passuk; not listed as a numbered Torah Temimah unit here).
Lemma / focus: נפל.
English: “Nafal” means he dwelt, as in “Midyan and Amalek and the children of the East were dwelling (noflim) in the valley.” Here it uses the language of falling; elsewhere it says “he shall dwell alongside all his brothers” — while Yitzchak lives he dwells; when he dies, he falls.
Derash on the verse (Rashi / midrash) — not a formal named middah of the 13: the rare verb is explained by parallel usage and linked to the earlier oracle about Yishmael.
“Nafal” here means he dwelt alongside all his brothers; while Yitzchak lived, Yishmael’s line dwelt in place; the language of falling is reserved for later.