In the Quran there are 2 words that are used to mean doubt:
الشك and الريبI have produced some videos to demonstrate the difference in meaning and how they are used in the Quran.
The doubt of the disbelievers is based nothing but on conjecture. They have absolutely no proof for their belief . If one was to examine the matter logically it becomes clear that believing in an hour would be more logical and advantageous .
La al nafiyatu lil Jins was used in the verse
which negates any doubt about the hour that causes one to reject it. Is it illogical and absurd for one to reject an after life based on no evidence.