Musnad Ahmad 28:178

Hassan, Ishaq bin Isa, and Yahya bin Ishaq narrated to us, they said: Ibn Lahi'ah narrated to us, Yazid bin Amr al-Ma'afiri narrated to us, from Abu Abd al-Rahman al-Hubuli, from Abdullah bin Amr bin al-As, who said: The Messenger of Allah, may Allah bless him and grant him peace, said: "Whoever remains silent is saved."