It was narrated from 'Aishah that the Prophet (ﷺ) said:"The divorce of a slave woman is twice, and her (waiting) period is two menstrual cycles." Abu 'Asim said: "I mentioned this to Muzahir and said: 'Tell me what you told Ibn Juraij.' So he told me, narrating from Qasim from 'Aishah, that the Prophet (ﷺ) said: 'The divorce of a slave woman is twice, and her (waiting) period is two menstrual cycles

English translation · Sunan Ibn Majah