Musnad Ahmad 32:814

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from Mu'awiyah ibn Qurrah, from Anas ibn Malik, from the Prophet, may Allah bless him and grant him peace, that he said: "O Allah, there is no life except the life of the Hereafter." Shu'bah said: Or he said: "O Allah, indeed the life is the life of the Hereafter, so rectify the Ansar and the Muhajirun."