Tafsir Ibn Kathir -> Surah Al-Baqarah -> The `Iddah (Waiting Period) for the Khul"

At-Tirmidhi reported that Rubayi` bint Mu`awwidh bin `Afra' got a Khul` during the time of Allah's Messenger and the Prophet ordered her to wait for one menstruation period for `Iddah.