Sahih Muslim | Book 1 | Hadith Number 244
Narrated by Abu Huraira
It is narrated on the authority of Abu Huraira that the Messenger of Allah may peace be upon him) observed: The Satan comes to everyone of you and says: Who created this and that? till he questions: Who created your Lord? When he comes to that, one should seek refuge in Allah and keep away (from such idle thoughts).