Abdur Rahman ibn Yazid reported that Sayyidina Abdullah (RA) narrated: I was hiding behind the curtain of the Ka’bah when three men with very fat stomachs but hearts short of understanding came there. They were a Qurayshi and his two Thaqafi sons-in-law, or a Thaqafi and his two Qurayshi sons-in-law. They conversed with each other but I could not decipher what they said. 0ne of them asked, ‘Do you think that Allah hears this conversation of ours? The other said, ‘When we raise our voices, He hears it but when we do not raise it, He cannot hear it.’ The third said, “If He hears something of it then He hears all of it.” So I mentioned that to the Prophet (SAW) and Allah revealed to him;
"And you used not to cover yourselves, lest your ears and your eyes, and your skins should bear witness against you, but you thought that Allah’s did not know much of what you were doing. And that thought of yours which you thought regarding your Lord has ruined you, so you have become of the losers." (41 : 22-23)
[Ahmed 3614]