It is narrated from Hazrat Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) used to say in his tent: O Allah! Here I am, there is no life except the life of the Hereafter, so forgive the Ansar and the Muhajireen.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 13258