Two person of Bani Thaqif and one from Quarish (or two persons from Quraish and one from Bani
Thaqif) who had fat bellies but little wisdom, met near the Ka`ba. One of them said, "Did you see that
Allah hears what we say? " The other said, "He hears us if we speak aloud, but He does not hear if we
speak in stealthy quietness (softly)." The third fellow said, "If He hears when we speak aloud, then He
surely hears us if we speak in stealthy quietness (softly)." So Allah revealed the Verse:--
'And you have not been screening against yourselves, lest your ears, and your eyes and your skins
should testify against you..." (41.22)
Sahih al-Bukhari Book 97, Hadith 146