Sunan Abi Dawud, Book 29, Hadith 3943 (USC-MSA) ⓘ
Narrated Jabir ibn Abdullah: We sold slave-mothers during the time of the Messenger of Allah and of AbuBakr. When Umar was in power, he forbade us and we stopped.
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا حَمَّادٌ، عَنْ قَيْسٍ، عَنْ عَطَاءٍ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ بِعْنَا أُمَّهَاتِ الأَوْلاَدِ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم وَأَبِي بَكْرٍ فَلَمَّا كَانَ عُمَرُ نَهَانَا فَانْتَهَيْنَا .
also referenced under: Hadith 3954 (DarusSalam) & Hadith 3943 (Hasan)