Read Ruku 252 of the Quran

مَّا لَهُم بِهِۦ مِنْ عِلْمٍۢ وَلَا لِـَٔابَآئِهِمْ ۚ كَبُرَتْ كَلِمَةًۭ تَخْرُجُ مِنْ أَفْوَٰهِهِمْ ۚ إِن يَقُولُونَ إِلَّا كَذِبًۭا ﴿٥﴾

They have no knowledge of it, nor had their fathers. Grave is the word that comes out of their mouths; they speak not except a lie.

فَلَعَلَّكَ بَـٰخِعٌۭ نَّفْسَكَ عَلَىٰٓ ءَاثَـٰرِهِمْ إِن لَّمْ يُؤْمِنُوا۟ بِهَـٰذَا ٱلْحَدِيثِ أَسَفًا ﴿٦﴾

Then perhaps you would kill yourself through grief over them, [O Muhammad], if they do not believe in this message, [and] out of sorrow.

إِنَّا جَعَلْنَا مَا عَلَى ٱلْأَرْضِ زِينَةًۭ لَّهَا لِنَبْلُوَهُمْ أَيُّهُمْ أَحْسَنُ عَمَلًۭا ﴿٧﴾

Indeed, We have made that which is on the earth adornment for it that We may test them [as to] which of them is best in deed.

وَإِنَّا لَجَـٰعِلُونَ مَا عَلَيْهَا صَعِيدًۭا جُرُزًا ﴿٨﴾

And indeed, We will make that which is upon it [into] a barren ground.

أَمْ حَسِبْتَ أَنَّ أَصْحَـٰبَ ٱلْكَهْفِ وَٱلرَّقِيمِ كَانُوا۟ مِنْ ءَايَـٰتِنَا عَجَبًا ﴿٩﴾

Or have you thought that the companions of the cave and the inscription were, among Our signs, a wonder?

إِذْ أَوَى ٱلْفِتْيَةُ إِلَى ٱلْكَهْفِ فَقَالُوا۟ رَبَّنَآ ءَاتِنَا مِن لَّدُنكَ رَحْمَةًۭ وَهَيِّئْ لَنَا مِنْ أَمْرِنَا رَشَدًۭا ﴿١٠﴾

[Mention] when the youths retreated to the cave and said, "Our Lord, grant us from Yourself mercy and prepare for us from our affair right guidance."

فَضَرَبْنَا عَلَىٰٓ ءَاذَانِهِمْ فِى ٱلْكَهْفِ سِنِينَ عَدَدًۭا ﴿١١﴾

So We cast [a cover of sleep] over their ears within the cave for a number of years.

ثُمَّ بَعَثْنَـٰهُمْ لِنَعْلَمَ أَىُّ ٱلْحِزْبَيْنِ أَحْصَىٰ لِمَا لَبِثُوٓا۟ أَمَدًۭا ﴿١٢﴾

Then We awakened them that We might show which of the two factions was most precise in calculating what [extent] they had remained in time.