The Torah closes its account of Ishmael's line with a map. Targum Pseudo-Jonathan on Genesis 25:18 names the borders: "they dwelt from Hindiki unto Chalutsa, which is in face of Mizraim from going up to Athur."
Hindiki — India. Chalutsa — the settlement near the Egyptian frontier in the Negev. Mizraim — Egypt. Athur — Assyria. The Targum sketches a vast arc that stretches from the Indian subcontinent across the Arabian peninsula to the edges of Egypt and up to Assyria. This is not a small territory. This is a continent's worth of descendants.
Then the verse's quietly astonishing final line: "Before the face of all his brethren he dwelt in his possession." The Aramaic phrase al anpei kol achohi can be read two ways. It means "in the presence of all his brothers," suggesting peaceful settlement next to his kin. It can also mean "over against all his brothers," suggesting tension and rivalry. The Targum lets the ambiguity stand.
Both readings are true. Ishmael's children lived alongside Israel, sometimes as traders (think of the Ishmaelite caravan that would later purchase Joseph in Genesis 37:25), sometimes as rivals, always as nearby presence on the map. The Torah refuses to send Ishmael away forever. It places him right there, in the line of sight.
The Maggid's teaching is unusually geographical. God keeps the covenant people surrounded by reminders of their extended family. You cannot erase a brother by refusing to draw him on your map. The Torah draws him — vast, sprawling, from India to Egypt — and lets the covenant family grow up with the weight of that shared lineage on every side.