Musnad Ahmad 1153:550

Abu al-Mughirah narrated to us, he said: al-Awza'i narrated to us, he said: al-Zuhri narrated to us, from al-Qasim, from Aisha, she said: The Prophet, peace and blessings of Allah be upon him, entered while I was covering myself with a curtain (qiram) that had an image on it. He tore it down, then said: "Indeed, the people with the severest punishment on the Day of Resurrection are those who imitate the creation of Allah, the Almighty and Majestic."