Musnad Ahmad 30:753

Zayd ibn al-Hubab narrated to us, Sufyan narrated to me, from Simak ibn Harb, from Malik ibn Zalim, from Abu Hurayrah, that he narrated to Marwan ibn al-Hakam, saying: The beloved one, Abu al-Qasim, the truthful and the believed, may Allah bless him and grant him peace, narrated to me: "The destruction of my nation will be at the hands of young, foolish boys from Quraysh."