Musannaf Ibn Abi Shayba 23:65

Ghundar narrated to us, from Shu'bah, from Salamah, from Ibrahim, from Alqamah, who said: A man said in the presence of Abdullah, "I am a believer." He (Abdullah) said, "Say: 'I am in Paradise,' but we believe in Allah, His angels, His books, and His messengers."