Quran 2:76 — Surah Al-Baqarah, ayah 76

وَإِذَا لَقُواْ ٱلَّذِينَ ءَامَنُواْ قَالُوٓاْ ءَامَنَّا وَإِذَا خَلَا بَعۡضُهُمۡ إِلَىٰ بَعۡضٖ قَالُوٓاْ أَتُحَدِّثُونَهُم بِمَا فَتَحَ ٱللَّهُ عَلَيۡكُمۡ لِيُحَآجُّوكُم بِهِۦ عِندَ رَبِّكُمۡۚ أَفَلَا تَعۡقِلُونَ

And when they meet those who believe, they say, "We have believed"; but when they are alone with one another, they say, "Do you talk to them about what Allah has revealed to you so they can argue with you about it before your Lord?" Then will you not reason

Kad sretnu vjernike, oni govore: "Vjerujemo!", a čim se osame jedni s drugima, kažu: "Zar ćete im kazivati o onome što je Allah samo vama objavio, pa da im to bude dokaz protiv vas pred Gospodarom vašim? Zar se nećete opametiti?"