From Sahih Bukhari (Hadith 3276):
Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "Satan comes to one of you and says, 'Who created so-and-so? 'till he says, 'Who has created your Lord?' So, when he inspires such a question, one should seek refuge with Allah and give up such thoughts
Reference: Bukhari 3276