Al-Kahf 18:3

بِسْمِ اللَّهِ الرَّحْمَـٰنِ الرَّحِيمِ الْحَمْدُ لِلَّهِ الَّذِي أَنزَلَ عَلَىٰ عَبْدِهِ الْكِتَابَ وَلَمْ يَجْعَل لَّهُ عِوَجًا ۜ

[All] praise is [due] to Allah, who has sent down upon His Servant the Book and has not made therein any deviance.

قَيِّمًا لِّيُنذِرَ بَأْسًا شَدِيدًا مِّن لَّدُنْهُ وَيُبَشِّرَ الْمُؤْمِنِينَ الَّذِينَ يَعْمَلُونَ الصَّالِحَاتِ أَنَّ لَهُمْ أَجْرًا حَسَنًا

[He has made it] straight, to warn of severe punishment from Him and to give good tidings to the believers who do righteous deeds that they will have a good reward

وَيُنذِرَ الَّذِينَ قَالُوا اتَّخَذَ اللَّهُ وَلَدًا

And to warn those who say, "Allah has taken a son."

مَّا لَهُم بِهِ مِنْ عِلْمٍ وَلَا لِآبَائِهِمْ ۚ كَبُرَتْ كَلِمَةً تَخْرُجُ مِنْ أَفْوَاهِهِمْ ۚ إِن يَقُولُونَ إِلَّا كَذِبًا

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 بَاخِعٌ نَّفْسَكَ عَلَىٰ آثَارِهِمْ إِن لَّمْ يُؤْمِنُوا بِهَـٰذَا الْحَدِيثِ أَسَفًا

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