Musnad Ahmad 33:647

Hassan narrated to us, Ibn Lahi'ah narrated to us, Abu al-Zubayr narrated to us, he said: I asked Jabir about the slain person who was killed, and Suhaym made an announcement regarding him. He said: We were at Hunayn, and the Prophet, peace and blessings of Allah be upon him, ordered Suhaym to announce to the people that: "No one shall enter Paradise except a believer." He said: And I do not know him to have killed anyone. Musa ibn Dawud said: He killed someone.