Surah Az-Zukhruf — Ayah 80 (43:80)
أَمۡ يَحۡسَبُونَ أَنَّا لَا نَسۡمَعُ سِرَّهُمۡ وَنَجۡوَىٰهُمۚ بَلَىٰ وَرُسُلُنَا لَدَيۡهِمۡ يَكۡتُبُونَ ٨٠
English translation (Saheeh International)
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.
Brief commentary
Or, do they think that I do not hear their secrets that they hide within their hearts, or those that they whisper to one another? Nay! I hear them all, and the angels with them write everything they do.