Dalil
العربية

Quran Yusuf 12:2

إِنَّآ أَنزَلۡنَٰهُ قُرۡءَٰنًا عَرَبِيّٗا لَّعَلَّكُمۡ تَعۡقِلُونَ

Translation

Indeed, We have sent it down as an Arabic Qur’ān that you might understand.