Is anything incumbent upon one who thought about a natural matter and smiled upon hearing a supplication for deliverance from an evil end?

It is clear that you are afflicted with obsessive whispers (waswasah) regarding this matter. Therefore, we warn you against these whispers and against giving in to them, for it leads to great evil, and there is nothing [wrong] upon you. You must counter these whispers by turning away from them and ignoring them.