Musnad Abu Ya'la al-Mawsili 249:6

Ahmad ibn Isa al-Tustari narrated to us, Bishr ibn Bakr narrated to us, from al-Awza'i, he said: Rabi'ah narrated to me, he said: I heard Wathilah ibn al-Asqa' say: The Messenger of Allah, may Allah bless him and grant him peace, came out to us and said: "You claim that I am the last of you in death? Verily, I am the first of you in death, and you will follow me in groups, some of you destroying others."