Surah Az-Zukhruf 43:3

إِنَّا جَعَلْنَـٰهُ قُرْءَٰنًا عَرَبِيًّا لَّعَلَّكُمْ تَعْقِلُونَ

Indeed, We have made it an Arabic Qur’ān that you might understand.

Translation: Saheeh International

Tafsir

Lo! We have made it We have brought the Book into existence as an Arabic Qur’ān in the language of the Arabs that perhaps you O people of Mecca may understand that you may comprehend its meanings.

Excerpt from Tafsir al-Jalalayn, commentary on 43:3, via Quran.com. The reader has the full commentary and 9 more tafsirs.