Targum su Rut 4:20

Aminadab begot Nahshon, who was the head of the household of the tribe of Judah, and Nahshon begot Salma the righteous. He is the Salma of Beth Lehem of Judah, and Netophah, whose sons abolished the guards which the wicked Jeroboam had set over the highways. They served their father, and were becoming children, like balm.