Musnad Ahmad 33:679

Zakariya ibn 'Adi narrated to us, 'Ubayd Allah narrated to us, from 'Abd Allah ibn Muhammad ibn 'Aqil, from Jabir, who said: A man came to the Messenger of Allah, may Allah bless him and grant him peace, and said: "Do you see, if I strive in the way of Allah with my soul and my wealth until I am killed, patient and seeking reward, advancing and not retreating, will I enter Paradise?" He said: "Yes." Then, when he turned away, he called him and said: "Except if you have a debt for which you have no repayment."