Musnad Abu Ya'la al-Mawsili 252:6

Ishaq narrated to us, Abd al-Aziz ibn Abi Hazim narrated to us, he said: My father narrated to me, from Sahl ibn Sa’d, who said: The Messenger of Allah (may Allah bless him and grant him peace) came to us while we were carrying dirt upon our heads. He said: "O Allah, there is no life except the life of the Hereafter, so forgive the Ansar and the Muhajirun."