Surah Al-Baqarah, ayah 13

2:13

وَإِذَا قِيلَ لَهُمۡ ءَامِنُواْ كَمَآ ءَامَنَ ٱلنَّاسُ قَالُوٓاْ أَنُؤۡمِنُ كَمَآ ءَامَنَ ٱلسُّفَهَآءُۗ أَلَآ إِنَّهُمۡ هُمُ ٱلسُّفَهَآءُ وَلَٰكِن لَّا يَعۡلَمُونَ ١٣

Wa idhā qīla lahum āminū kamā āmanan-nāsu qālū anu'minu kamā āmanas-sufahā'u alā innahum humus-sufahā'u walākil lā ya'lamūn

And when it is said to them, "Believe as the people have believed," they say, "Should we believe as the foolish have believed?" Unquestionably, it is they who are the foolish, but they know [it] not.