Quran 31:21 from Surah Luqman on Divine Marvels.
وَإِذَا قِيلَ لَهُمُ ٱتَّبِعُواْ مَآ أَنزَلَ ٱللَّهُ قَالُواْ بَلۡ نَتَّبِعُ مَا وَجَدۡنَا عَلَيۡهِ ءَابَآءَنَآۚ أَوَلَوۡ كَانَ ٱلشَّيۡطَٰنُ يَدۡعُوهُمۡ إِلَىٰ عَذَابِ ٱلسَّعِيرِ
English translation: And when it is said to them Follow what Allah (has) revealed Allah (has) revealed they say Nay we will follow what we found on it our forefathers Even if Shaitaan was Shaitaan was (to) call them to (the) punishment (of) the Blaze
Transliteration: wa-idha qila lahumu ittabi'u ma anzala al-lahu qalu bal nattabi'u ma wajadna alayhi abaana awalaw kana al-shaytanu yad'uhum ila adhabi al-sa'iri