Musnad Abu Ya'la al-Mawsili 245:13

Muhammad ibn Isma'il ibn Abi Samina al-Basri narrated to us, 'Abd al-Wahhab ibn Najdah narrated to us, al-Walid ibn Muslim narrated to us, from Marwan ibn Janah, from ibn Hubays, from Mu'awiyah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "You claim that I am the last of you in death. Nay, I am the first of you in death, and you will follow me in groups, some of you striking the necks of others."