The Prophet ﷺ said, "The divorce of a slave woman is two pronouncements, and her waiting period is two menstrual cycles."Abu Asim said, I mentioned this to Muzahir and said to him, "Narrate it to me just as you narrated it to Ibn Jurayj." So he informed me from Qasim, from Ayesha, that the Prophet ﷺ said, "The divorce of a slave woman is two pronouncements, and her waiting period is two menstrual cycles."
حدثنا محمد بن بشار حدثنا أبو عاصم حدثنا ابن جريج عن مظاهر بن أسلم عن القاسم
عن النبي ﷺ قال طلاق الأمة تطليقتان وقرؤها حيضتان قال أبو عاصم فذكرته لمظاهر فقلت حدثني كما حدثت ابن جريج فأخبرني عن القاسم عن عائشة عن النبي ﷺ قال طلاق الأمة تطليقتان وقرؤها حيضتان
[Its chain of transmission is daif] Abu Dawud narrated it in Talaq, chapter on the practice of divorce for the slave, no. 2189, and Tirmidhi, no. 1182, from the hadith of Abu Asim, with the same wording. Abu Dawud said it is a majhul hadith, and Tirmidhi said it is gharib.Mudhahir is daif, as stated in Taqrib and elsewhere.