43:3
إِنَّا جَعَلْنَـٰهُ قُرْءَٰنًا عَرَبِيًّا لَّعَلَّكُمْ تَعْقِلُونَ
innā jaʿalnāhu qur'ānan ʿarabiyyan laʿallakum taʿqilūna
We have made it a Quran in Arabic so that you [people] may understand.
Verily, We have made it a Qur’ân in Arabic that you may be able to understand (its meanings and its admonitions).