Quran 2:8

وَمِنَ ٱلنَّاسِ مَن يَقُولُ ءَامَنَّا بِٱللَّهِ وَبِٱلْيَوْمِ ٱلْءَاخِرِ وَمَا هُم بِمُؤْمِنِينَ

And of the people are some who say, "We believe in Allah and the Last Day," but they are not believers.

Translation · Saheeh International