fall from someone's lips
US /fɑːl frəm ˈsʌm.wʌnz lɪps/
UK /fɑːl frəm ˈsʌm.wʌnz lɪps/

1.
to be spoken by someone, often unintentionally or in a particular manner
:
•
A harsh word never fell from her lips.
•
Every word that fell from his lips was a lie.