Surah An-Najm (The Stars), Verse 23

اِنْ هِیَ اِلَّاۤ اَسْمَآءٌ سَمَّیْتُمُوْهَاۤ اَنْتُمْ وَاٰبَآؤُكُمْ مَّاۤ اَنْزَلَ اللّٰهُ بِهَا مِنْ سُلْطٰنٍ اِنْ یَّتَّبِعُوْنَ اِلَّا الظَّنَّ وَمَا تَهْوَی الْاَنْفُسُ وَلَقَدْ جَآءَهُمْ مِّنْ رَّبِّهِمُ الْهُدٰی ۟

In hiya illaaa asmaaa'un sammaitumoohaaa antum wa aabaaa'ukum maaa anzalal laahu bihaa min sultaan; inyyattabi'oona illaz zanna wa maa tahwal anfusu wa laqad jaaa'ahum mir Rabbihimul hudaa

“These are nothing but names which ye have devised,- ye and your fathers,- for which Allah has sent down no authority (whatever). They follow nothing but conjecture and what their own souls desire!- Even though there has already come to them Guidance from their Lord!”

Quran 53:23 (Yusuf Ali Translation)