Chapter: The prohibition of initiating the greeting of salam with a disbeliever, the manner of replying to them, and the recommendation to offer salam to a gathering that includes both Muslims and non-Muslims.
866 – Abu Hurayrah (may Allah be pleased with him) reported that the Messenger of Allah (peace and blessings be upon him) said, “Do not begin the Jews or the Christians with the greeting of salam. If you meet one of them on the road, compel him to its narrowest side.” Narrated by Muslim.
867 – Anas (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said, “When the People of the Book greet you with salam, respond with, ‘And upon you.’” Agreed upon.
868 – Usamah (may Allah be pleased with him) reported that the Prophet (peace and blessings be upon him) once passed by a gathering in which there were Muslims, idol-worshipping polytheists, and Jews, and he greeted them with salam. Agreed upon.