Surat Ar-Ra'd (The Thunder) - الرعد

وَكَذَٰلِكَ أَنزَلْنَٰهُ حُكْمًا عَرَبِيًّا وَلَئِنِ ٱتَّبَعْتَ أَهْوَآءَهُم بَعْدَمَا جَآءَكَ مِنَ ٱلْعِلْمِ مَا لَكَ مِنَ ٱللَّهِ مِن وَلِىٍّ وَلَا وَاقٍ ﴿٣٧﴾

And thus have We revealed it, a true judgment in Arabic, and if you follow their low desires after what has come to you of knowledge, you shall not have against Allah any guardian or a protector.