Qur'an 43:80

أَمْ يَحْسَبُونَ أَنَّا لَا نَسْمَعُ سِرَّهُمْ وَنَجْوَىٰهُم ۚ بَلَىٰ وَرُسُلُنَا لَدَيْهِمْ يَكْتُبُونَ

“Or do they think that We hear not their secrets and their private conversations? Yes, [We do], and Our messengers [i.e., angels] are with them recording.”

Az-Zukhruf 43:80 · Saheeh International