Maliks Muwatta Book 028, Hadith Number 005.

Section : Asking Consent of Virgins and Women Previously Married for their Persons.

Yahya related to me from Malik that he had heard that Said ibn al-Musayyab had said that Umar ibn al-Khattab said, "A woman is only married with the consent of her guardian, someone of her family with sound judgement or the Sultan.