Surah Al-Baqarah (The Cow), Verse 170

وَاِذَا قِیْلَ لَهُمُ اتَّبِعُوْا مَاۤ اَنْزَلَ اللّٰهُ قَالُوْا بَلْ نَتَّبِعُ مَاۤ اَلْفَیْنَا عَلَیْهِ اٰبَآءَنَا اَوَلَوْ كَانَ اٰبَآؤُهُمْ لَا یَعْقِلُوْنَ شَیْـًٔا وَّلَا یَهْتَدُوْنَ ۟

Wa izaa qeela lahumuttabi'oo maaa anzalal laahu qaaloo bal nattabi'u maaa alfainaa 'alaihi aabaaa'anaaa; awalaw kaana aabaaa'uhum laa ya'qiloona shai'anw wa laa yahtadoon

“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?”

Quran 2:170 (Yusuf Ali Translation)