So Lot chose for himself the whole plain of the Jordan, and Lot journeyed eastward. Thus they parted from each other.
Rashi on Genesis 13:11, citing Bereshit Rabbah 41:7 for the midrashic reading of “מִקֶּדֶם.”
English: Lot journeyed from the east (mikedem) — he removed himself from the Ancient One of the world; he said: I want neither Avraham nor his God.
Supplementary classical material not listed by Torah Temimah under this exact passuk.