(13) باب رَدِّ السَّلاَمِ عَلَى أَهْلِ الذِّمَّةِ
It was narrated that Anas bin Malik said "the Messenger of Allah(ﷺ) said":
"When any of the People of the Book greets you with Salam (peace), then say, Wa 'alaikum(and also upon you)." (FR)
Reference (FR): Sunan Ibn Majah 3697 (FR)
In-book reference (FR): Book 33, Hadith 41 (FR)
English translation (FR): Vol. 5, Book 33, Hadith 3697 (FR)