Musnad Ahmad 28:607

Muhammad ibn Ubayd narrated to us, Zakariyya narrated to us, from Amir, I heard Abdullah ibn Amr, I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "The Muslim is the one from whose tongue and hand the people are safe. And the emigrant (Muhajir) is the one who abandons what Allah has forbidden."