النَّجْمِ · 23

إِنۡ هِيَ إِلَّآ أَسۡمَآءࣱ سَمَّيۡتُمُوهَآ أَنتُمۡ وَءَابَآؤُكُم مَّآ أَنزَلَ ٱللَّهُ بِهَا مِن سُلۡطَٰنٍۚ إِن يَتَّبِعُونَ إِلَّا ٱلظَّنَّ وَمَا تَهۡوَى ٱلۡأَنفُسُۖ وَلَقَدۡ جَآءَهُم مِّن رَّبِّهِمُ ٱلۡهُدَىٰٓ

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