Musnad Ahmad 33:646

Musa narrated to us, Ibn Lahi'ah informed us, from Abu al-Zubayr, who said: I asked Jabir about the slain man who was killed, and Suhaym made the call (adhan) regarding him. Jabir said: The Prophet, peace and blessings of Allah be upon him, commanded Suhaym to call out among the people: "Verily, no one shall enter Paradise except a believer." Jabir said: "And I do not know him to have killed anyone."