Surat Al-Baqara (The Cow) - البقرة

وَإِذَا قِيلَ لَهُمُ ٱتَّبِعُوا۟ مَآ أَنزَلَ ٱللَّهُ قَالُوا۟ بَلْ نَتَّبِعُ مَآ أَلْفَيْنَا عَلَيْهِ ءَابَآءَنَآ أَوَلَوْ كَانَ ءَابَآؤُهُمْ لَا يَعْقِلُونَ شَيْـًٔا وَلَا يَهْتَدُونَ ﴿١٧٠﴾

And when it is said to them, Follow what Allah has revealed, they say: Nay! we follow what we found our fathers upon. What! and though their fathers had no sense at all, nor did they follow the right way.