Divorce (Kitab Al-Talaq)
Dawud :: Book 12 : Hadith 2184
Narrated Aisha, Ummul Mu'minin:
The Prophet (peace_be_upon_him) said: The divorce of a slave-woman consists in saying it twice and her waiting period is two menstrual courses (qur') AbuAsim said: A similar tradition has been narrated to me by Muzahir and al-Qasim on the authority of Aisha from the Prophet (peace_be_upon_him), except that he said: And her waiting period ('iddah) is two courses.