"Praise be to Allah Whose hearing encompasses all voices. Khawlah came to the Messenger of Allah complaining about her husband, but I could not hear what she said. Then Allah, the Mighty and Sublime, revealed: 'Indeed Allah has heard the statement of her that disputes with you concerning her husband, and complains to Allah. And Allah hears the argument between you both.'"
Sunan an-Nasa'i Book 27, Hadith 72