If a slave-girl is freed after marriage, she has the choice (to stay or leave), and if she has given birth to a child, then marriage becomes forbidden, otherwise, if consummation has taken place, then she is his wife.
Hadith Referenceسنن سعید بن منصور / كتاب الطلاق / 2422
Hadith Gradingمحدثین:إسناده صحيح
Hadith Takhrij«إسناده صحيح، مقطوع، «انفرد به المصنف من هذا الطريق»»