וַיֵּחָלֵ֨ק עֲלֵיהֶ֧ם ׀ לַ֛יְלָה ה֥וּא וַעֲבָדָ֖יו וַיַּכֵּ֑ם וַֽיִּרְדְּפֵם֙ עַד־חוֹבָ֔ה אֲשֶׁ֥ר מִשְּׂמֹ֖אל לְדַמָּֽשֶׂק׃
Y derramóse sobre ellos de noche él y sus siervos, é hiriólos, y fuélos siguiendo hasta Hobah, que está á la izquierda de Damasco.
Rashi
ויחלק עליהם AND HE DIVIDED HIMSELF AGAINST THEM — In accordance with its plain sense you must invert the order of the words of the verse: “And he divided himself, he and his servants, against them, at night”, as is the manner of those who pursue their enemies — they divide themselves up to follow after those of whom they are in pursuit when these flee in different directions.
Chizkuni
ויכם וירדפם, “He defeated (killed) them and pursued them;” Rabbi Tanchum poses the rhetorical question how someone can pursue corpses? [Since the Torah first reports that these people had been smitten. Ed.] He answers that Avram killed the men whom G-d had pursued. G-d put the men to flight so that Avram could easily kill them.
Da'at Zekenim
ויכם וירדפם, “he smote them and put them to flight.” Midrash Tanchuma asks: “who ever heard of soldiers pursuing dead people? How are we to understand this sequence in the verse?” He therefore understands our verse as meaning that Avraham and his men pursued the soldiers of that army, and G–d killed them.