وَاِذَا قِيْلَ لَهُمْ تَعَالَوْا اِلٰى مَآ اَنْزَلَ اللّٰهُ وَاِلَى الرَّسُوْلِ قَالُوْا حَسْبُنَا مَا وَجَدْنَا عَلَيْهِ اٰبَاۤءَنَا ۗ اَوَلَوْ كَانَ اٰبَاۤؤُهُمْ لَا يَعْلَمُوْنَ شَيْـًٔا وَّلَا يَهْتَدُوْنَ ( المائدة: ١٠٤ )
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 (al-Māʾidah 5:104)
And when it is said to them, "Come to what Allah has revealed and to the Messenger," they say, "Sufficient for us is that upon which we found our fathers." Even though their fathers knew nothing, nor were they guided? (Al-Ma'idah  : 104)
1 Mufti Taqi Usmani
When it is said to them, “Come to what Allah has sent down, and to the Messenger;” they say, “Sufficient for us is that on which we have found our forefathers.” Is it so, even though their forefathers knew nothing, and had no guidance either?