The Qur’an Verse 37

وَكَذَٰلِكَ أَنزَلْنَٰهُ حُكْمًا عَرَبِيًّۭا ۚ وَلَئِنِ ٱتَّبَعْتَ أَهْوَآءَهُم بَعْدَ مَا جَآءَكَ مِنَ ٱلْعِلْمِ مَا لَكَ مِنَ ٱللَّهِ مِن وَلِىٍّۢ وَلَا وَاقٍۢ

Ainsi l'avons-Nous fait descendre (le Coran) [sous forme] de loi en arabe. Et si tu suis leurs passions après ce que tu as reçu comme savoir, il n'y aura pour toi, contre Allah, ni allié ni protecteur.

Thus have We revealed it, a decisive utterance in Arabic; and if thou shouldst follow their desires after that which hath come unto thee of knowledge, then truly wouldst thou have from Allah no protecting friend nor defender.