وَنا ابْنُ صَاعِدٍ ، نَا بُنْدَارٌ ، نَا مُحَمَّدٌ ، نَا شُعْبَةُ بِهَذَا ، قَالَ : " كُنَّا نَبِيعُ أُمَّهَاتِ الأَوْلادِ عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ " .
The same narration is transmitted with another chain, however, in it are these words: "During the blessed time of the Prophet (peace and blessings be upon him), we used to sell an 'umm walad' (a slave woman who had borne a child to her master)."