إِن هِيَ إِلّا أَسماءٌ سَمَّيتُموها أَنتُم وَآباؤُكُم ما أَنزَلَ اللَّهُ بِها مِن سُلطانٍ ۚ إِن يَتَّبِعونَ إِلَّا الظَّنَّ وَما تَهوَى الأَنفُسُ ۖ وَلَقَد جاءَهُم مِن رَبِّهِمُ الهُدىٰ

These are nothing but names you named—you and your forefathers—without any authorization from God. They follow nothing except assumption and what the souls desire, even though guidance did come to them from their Lord.