Qur'an 5:104

وَإِذَا قِيلَ لَهُمْ تَعَالَوْا۟ إِلَىٰ مَآ أَنزَلَ ٱللَّهُ وَإِلَى ٱلرَّسُولِ قَالُوا۟ حَسْبُنَا مَا وَجَدْنَا عَلَيْهِ ءَابَآءَنَآ ۚ أَوَلَوْ كَانَ ءَابَآؤُهُمْ لَا يَعْلَمُونَ شَيْـًٔا وَلَا يَهْتَدُونَ

And when it is said unto them: Come unto that which Allah hath revealed and unto the messenger, they say: Enough for us is that wherein we found our fathers. What! Even though their fathers had no knowledge whatsoever, and no guidance?