(3) باب مَا يُكْرَهُ مِنْ كَثْرَةِ السُّؤَالِ وَتَكَلُّفِ مَا لاَ يَعْنِيهِ
Narrated Anas bin Malik:
Allah's Messenger (ﷺ) said, "People will not stop asking questions till they say, 'This is Allah, the Creator of everything, then who created Allah?' "
Reference: Sahih al-Bukhari 7296
In-book reference: Book 96, Hadith 27
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 92, Hadith 399