Musnad Ahmad 33:893

'Abd al-Rahman ibn Mahdi narrated to us, Zuhayr narrated to us, from 'Abdullah ibn Muhammad ibn 'Aqil, from Jabir: That a man came to the Prophet, 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, seeking reward, advancing and not retreating, will I enter Paradise?" He said: "Yes, unless you leave behind a debt for which you have no means of repayment."