Musnad Ahmad 788:166

Khalf ibn al-Walid narrated to us, Abu Ma'shar narrated to us, from Mus'ab ibn Thabit, from Muhammad ibn al-Munkadir, from Abu Burdah, from Abu Musa, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "There is no believer on the Day of Resurrection but that he will bring a Jew or a Christian and say: 'This is my ransom from the Fire.'"