Maliks Muwatta Book 29, Hadith Number 16.

Section : What is Not Clear in Giving Wives Right of Divorce.

Yahya related to me from Malik that he had heard that Abdullah ibn Umar and Abu Hurayra were asked about a man who gave his wife power over herself, and she returned it to him without doing anything with it. They said that there was no divorce. (i.e. The man’s giving his wife power over herself was not interpreted as a desire for divorce on his part.)

Yahya related to me from Malik from Yahya ibn Said that Said ibn al-Musayyab said, “If a man gives his wife authority over herself, and she does not separate from him and remains with him, there is no divorce.”

Malik said that a woman whose husband gave her power over herself and they separated while she was unwilling, had no power to revoke the divorce. She only had power over herself as long as they remained together.