Surah Az-Zukhruf (43:80)

أَمْ يَحْسَبُونَ أَنَّا لَا نَسْمَعُ سِرَّهُمْ وَنَجْوَىٰهُم بَلَىٰ وَرُسُلُنَا لَدَيْهِمْ يَكْتُبُونَ

Or do they reckon that We do not hear their secret and their private conversation? Yes indeed—while Our envoys are with them, writing.