Musnad Ahmad 28:110

Abu Ahmad and Abu Nu'aym narrated to us, they said: Sufyan narrated to us, from Ibrahim ibn Muhammad ibn al-Muntashir, from his father—this is in the hadith of Abu Ahmad al-Zubayri—he said: A man stayed with Masruq and said: I heard Abdullah ibn Amr ibn al-As saying: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "Whoever meets Allah while not associating anything with Him shall enter Paradise, and no sin shall harm him along with it, just as if he were to meet Him while associating something with Him, he shall enter the Fire, and no good deed shall benefit him along with it." Abu Nu'aym said in his hadith: A man or an elder from the people of Medina came and stayed with Masruq and said: I heard Abdullah ibn Amr saying: The Messenger of Allah, peace and blessings of Allah be upon him, said: "Whoever meets Allah not associating anything with Him, no sin shall harm him along with it; and whoever dies while associating something with Him, no good deed shall benefit him along with it." Abdullah [ibn Ahmad ibn Hanbal] said: "The correct version is what Abu Nu'aym said."