Musnad Ahmad 32:1578

Abu Salamah narrated to us, Hammad ibn Salamah narrated to us, from Thabit, from Anas, who said: "I witnessed him, peace and blessings be upon him, the day he entered Medina upon us, and I have not seen a day brighter than it, nor more beautiful. And I witnessed him the day he died, and I have not seen a day uglier than it."