Quran 5:104 from Surah Al-Maaida on Divine Marvels.
وَإِذَا قِيلَ لَهُمۡ تَعَالَوۡاْ إِلَىٰ مَآ أَنزَلَ ٱللَّهُ وَإِلَى ٱلرَّسُولِ قَالُواْ حَسۡبُنَا مَا وَجَدۡنَا عَلَيۡهِ ءَابَآءَنَآۚ أَوَلَوۡ كَانَ ءَابَآؤُهُمۡ لَا يَعۡلَمُونَ شَيۡـٔٗا وَلَا يَهۡتَدُونَ
English translation: And when it is said to them Come to what has (been) revealed (by) Allah and to the Messenger they said Sufficient for us (is) what we found upon it our forefathers Even though (that) their forefathers not knowing anything and not they (were) guided
Transliteration: wa-idha qila lahum ta'alaw ila ma anzala al-lahu wa-ila al-rasuli qalu hasbuna ma wajadna alayhi abaana awalaw kana abauhum la ya'lamuna shayan wala yahtaduna