A female slave, whose husband is a slave, has the option to keep him or leave him (when she is manumitted).
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا عَبْدُ الْوَهَّابِ، عَنْ أَيُّوبَ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ كَانَ زَوْجُ بَرِيرَةَ عَبْدًا أَسْوَدَ يُقَالُ لَهُ مُغِيثٌ، عَبْدًا لِبَنِي فُلاَنٍ، كَأَنِّي أَنْظُرُ إِلَيْهِ يَطُوفُ وَرَاءَهَا فِي سِكَكِ الْمَدِينَةِ.
Narrated Ibn `Abbas: Barira's husband was a black slave called Mughith, the slave of Bani so-and-so-- as if I am seeing him now, walking behind her along the streets of Medina.