Musannaf Ibn Abi Shayba 13:3058

Abu Bakr narrated to us, he said: Yunus bin Muhammad narrated to us, from Hammad bin Salamah, from Abu Ja'far al-Khatmi, from Muhammad bin Ka'b, from Abu Qatadah, he said: I heard the Messenger of Allah, may Allah bless him and grant him peace, saying: "Whoever relieves his debtor or wipes [the debt] away from him, he will be in the shade of the Throne on the Day of Resurrection."