Sura al-Baqara 2:170

وَإِذَا قِيلَ لَهُمُ ٱتَّبِعُوا۟ مَآ أَنزَلَ ٱللَّـهُ قَالُوا۟ بَلْ نَتَّبِعُ مَآ أَلْفَيْنَا عَلَيْهِ ءَابَآءَنَآ أَوَلَوْ كَانَ ءَابَآؤُهُمْ لَا يَعْقِلُونَ شَيْـًٔا وَلَا يَهْتَدُونَ

wa-idhā qīla lahumu ittabiʿū mā anzala allāhu qālū bal nattabiʿu mā alfaynā ʿalayhi ābāʾanā awalaw kāna ābāʾuhum lā yaʿqilūna shayʾan wa-lā yahtadūna

When it is said to them: "Follow what Allah hath revealed:" They say: "Nay! we shall follow the ways of our fathers." What! even though their fathers Were void of wisdom and guidance?