Musnad Ahmad 30:2178

Muhammad ibn Ja‘far narrated to us, he said: Shu‘bah narrated to us, from Ma‘mar, from al-Zuhri, from Sa‘id ibn al-Musayyib, from Abu Hurayrah, from the Prophet, may Allah bless him and grant him peace, "That he forbade the *fara‘* and the *‘atirah*." Muhammad said: "And I have heard it myself from Ma‘mar."