Musnad Abu Ya'la al-Mawsili 155:261

Ahmad ibn Imran al-Akhnasi narrated to us, Ibn Fudayl narrated to us, Umarah ibn al-Qa'qa' narrated to us, from Abu Zur'ah, who said: I entered the house of Marwan with Abu Hurayrah, and there were statues in it. Abu Hurayrah said: I heard the Messenger of Allah (may Allah bless him and grant him peace) say: Allah (Mighty and Majestic is He) says: "And who is more unjust than one who creates a creation like My creation? So let them create an atom, or let them create a grain, or let them create a barleycorn."