Silsilah as-Sahihah 2655 — Greeting non-Muslims

It is narrated from Sayyiduna Abu Basrah Ghifari (may Allah be pleased with him), he says that the Messenger of Allah (peace and blessings of Allah be upon him) said: "When you pass by the Jews, do not greet them with Salam, and if they greet you with Salam, then in reply say only «وعليكم» 'And upon you as well.'"