Musnad Ahmad 32:825

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from Qatadah, from Anas, that the Messenger of Allah (peace and blessings of Allah be upon him) used to say: "O Allah, the [true] life is the life of the Hereafter." Shu'bah said: Or he said: "O Allah, there is no life except the life of the Hereafter, so honor the Ansar and the Muhajirun."