Fussilat

And when We bestow favor upon man, he turns away and distances himself; but when evil touches him, then he is full of extensive supplication.

Say, "Have you considered: if it [i.e., the Qur’ān] is from Allāh and you disbelieved in it, who would be more astray than one who is in extreme dissension?"

We will show them Our signs in the horizons and within themselves until it becomes clear to them that it is the truth. But is it not sufficient concerning your Lord that He is, over all things, a Witness?

Unquestionably, they are in doubt about the meeting with their Lord. Unquestionably He is, of all things, encompassing.