Surah Al-Mai'dah (The Spread Table), Verse 104

وَاِذَا قِیْلَ لَهُمْ تَعَالَوْا اِلٰی مَاۤ اَنْزَلَ اللّٰهُ وَاِلَی الرَّسُوْلِ قَالُوْا حَسْبُنَا مَا وَجَدْنَا عَلَیْهِ اٰبَآءَنَا اَوَلَوْ كَانَ اٰبَآؤُهُمْ لَا یَعْلَمُوْنَ شَیْـًٔا وَّلَا یَهْتَدُوْنَ ۟

Wa izaa qeela lahum ta'aalaw ilaa maaa anzalallaahu wa ilar Rasooli qaaloo hasbunaa maa wajadnaa 'alaihi aabaaa'anaa; awa law kaana aabaaa'uhum laa ya'lamoona shai'anw wa laa yahtadoon

“When it is said to them: "Come to what Allah hath revealed; come to the Messenger": They say: "Enough for us are the ways we found our fathers following." what! even though their fathers were void of knowledge and guidance?”

Quran 5:104 (Yusuf Ali Translation)