Musnad Abu Ya'la al-Mawsili 150:200

Abdullah ibn Amir ibn Zurarah narrated to us, Abdullah ibn al-Ajalih narrated to us, from Hisham ibn Urwah, from his father, from Aisha, from the Messenger of Allah (peace and blessings of Allah be upon him), who said: "Indeed, the Shaytan comes to one of you and says: 'Who created the heavens?' He says: 'Allah.' He says: 'Who created the earth?' He says: 'Allah.' He says: 'Who created Allah?' So when that happens, let him say: 'I believe in Allah and His messengers.'"