Dalil
العربية

Quran Al-Baqarah 2:78

وَمِنۡهُمۡ أُمِّيُّونَ لَا يَعۡلَمُونَ ٱلۡكِتَٰبَ إِلَّآ أَمَانِيَّ وَإِنۡ هُمۡ إِلَّا يَظُنُّونَ

Translation

And among them are unlettered ones who do not know the Scripture except [indulgement in] wishful thinking, but they are only assuming.