Musnad Ahmad 30:302

Yahya narrated to us, from Ibn ‘Ajlan, from Sa‘id, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "If one of you strikes, let him avoid the face, and let him not say: 'May Allah make your face ugly and the face of whoever resembles your face,' for Allah the Exalted created Adam in His image."