(19) باب فِي الْمَمْلُوكَةِ تَعْتِقُ وَهِيَ تَحْتَ حُرٍّ أَوْ عَبْدٍ
While relating the tradition about Barirah A'ishah said "her husband was a slave, so the Prophet(ﷺ) gave her choice. She chose herself. Had he been a free man, he would not given her choice." (ID)
Reference (ID): Sunan Abi Dawud 2233 (ID)
In-book reference (ID): Book 13, Hadith 59 (ID)
English translation (ID): Book 12, Hadith 2225 (ID)