פירוש על דברי הימים א 6:62

To the sons of Merari who remained, from the tribe of Zebulun i.e., those who did not receive those twelve cities that Reuben, Gad, and Zebulun gave them, and this is the meaning of “who remained from the tribe of Zebzulun”: i.e., from the share of Zebulun, they [the tribe of Naphtali] gave to the remaining sons of Merari.