Musnad Ahmad 33:47

'Abd al-Razzaq narrated to us, from Ma'mar, from al-Zuhri, regarding the saying of the Almighty, the Majestic: "The Prophet is more worthy of the believers than themselves" [al-Ahzab: 6], from Abu Salamah, from Jabir, that the Prophet, peace and blessings of Allah be upon him, used to say: "I am more worthy of every believer than his own self. So, whoever among the men dies and leaves behind a debt, then it is upon me, and whoever leaves behind wealth, then it is for his heirs."