Satan comes to one of you and says, 'Who created such and such, and who created such and such', until he says: 'Who created your Lord?' If a person experiences this, he should seek refuge with Allah and desist from that

The Messenger of Allah (may Allah’s peace and blessings be upon him) mentions the effective remedy for the questions whispered by Satan to the believer. Satan says: Who created such and such, and who created such and such? Who created the heavens? Who created the earth? Based on his religion, natural disposition, and reason, the believer replies: Allah. But Satan does not stop at this limit of whisperings; rather, he proceeds until he asks: Who created your Lord? Thereupon, the believer should repel these whisperings with three things: Belief in Allah. Seeking refuge with Allah from Satan. Stopping to continue with such whisperings.

1. We should turn away from Satan's whisperings and insinuations and not give thought to them, and seek Allah's help in getting rid of them.
2. All the whisperings that enter a person's heart and contradict the Shariah come from Satan.
3. We are forbidden from thinking about Allah's Essence and are urged to ponder His creation and signs.

صحيح البخاري (4/ 123) (3276)، صحيح مسلم (1/ 120) (134)، إكمال المعلم (1/432)، المفهم (1/345)، فتح الباري (6/ 340)، طرح التثريب (8/163)، بهجة قلوب الأبرار (ص 27).