Musnad Ahmad 33:58

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from al-Aswad ibn Qays, from Nabih, from Jabir ibn 'Abdullah, who said: "I set out to the Messenger of Allah (may Allah bless him and grant him peace) regarding a debt that was upon my father, and I came to him as if I were a spark."