[6:113] This is to let the minds of those who do not believe in the Hereafter listen to such fabrications, and accept them, and thus expose their real convictions.*
*6:113 The Quran provides criteria that tell us whether we truly believe in the Hereafter or merely give it lip service. These important criteria are stated here, and in 17:45-46 and 39:45. *6:113-115 Upholding any source beside the Quran reflects disbelief in the Quran (Appendix 18).
According to the Quran what is the criteria to tell if we believe in the Hereafter?
Disbelievers Cannot Understand Quran
[17:45] When you read the Quran, we place between you and those who do not believe in the Hereafter an invisible barrier.
Quran: The ONLY Source
[17:46] We place shields around their minds, to prevent them from understanding it, and deafness in their ears. And when you preach your Lord, using the Quran alone,* they run away in aversion.
The Greatest Criterion*
[39:45] When GOD ALONE is mentioned, the hearts of those who do not believe in the Hereafter shrink with aversion. But when others are mentioned beside Him, they become satisfied.*