Musnad Ahmad 28:475

Abu al-Jawwab narrated to us, Ammar ibn Ruzayq narrated to us, from al-A'mash, from Abu Sa'id, who said: I came to Abdullah ibn Amr and said: "Narrate to me what you heard from the Messenger of Allah, may Allah bless him and grant him peace, and do not narrate to me from the Torah or the Gospel." He said: I heard the Messenger of Allah, may Allah bless him and grant him peace, say: "The Muslim is the one from whose tongue and hand the Muslims are safe, and the emigrant (Muhajir) is the one who abandons what Allah has forbidden."