Rashi on II Kings
A blessing [a gift]. A gift of peace, upon greeting, [e.g.,] when a student or a servant greets [his] master,9See Bereishis 33:11. salud, in O.F.10Na’amon lived as a righteous gentile, keeping the seven commandments that God gave to Noach and his descendants. However, he did not convert to Judaism. See Maseches Gittin 57b.