20:113
وَكَذَٰلِكَ أَنزَلْنَـٰهُ قُرْءَانًا عَرَبِيًّا وَصَرَّفْنَا فِيهِ مِنَ ٱلْوَعِيدِ لَعَلَّهُمْ يَتَّقُونَ أَوْ يُحْدِثُ لَهُمْ ذِكْرًا
wakadhālika anzalnāhu qur'ānan ʿarabiyyan waṣarrafnā fīhi mina l-waʿīdi laʿallahum yattaqūna aw yuḥ'dithu lahum dhik'ran
We have sent the Quran down in the Arabic tongue and given all kinds of warnings in it, so that they may beware or take heed-
And thus We have sent it down as a Qur’ân in Arabic, and have explained therein in detail the warnings, in order that they may fear Allâh, or that it may cause them to have a lesson from it (or to have the honour for believing and acting on its teachings).