Musnad Ahmad 534:3

Zayd ibn al-Hubab narrated to us, Mu'awiyah ibn Salih narrated to us, he said: Abu al-Zahiriyah narrated to me, from Abdullah ibn Busr, that a man came to the Prophet, may God bless him and grant him peace, while he was addressing the people on Friday. He said: "Sit down, for you have caused harm and you have been slow."