مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 3363
Marriage
Maintenance, and a Slave’s Rights - Section 2
وَعَنْهُ أَنَّهُ فَرَّقَ بَيْنَ جَارِيَةٍ وَوَلَدِهَا فَنَهَاهُ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ ذَلِكَ فردَّ البَيعَ. رَوَاهُ أَبُو دَاوُد مُنْقَطِعًا
He said he separated a slave girl from her child, but when the Prophet (ﷺ) forbade him to do that he cancelled the transaction. Abu Dawud transmitted it with a break in the isnad.
Mishkat al-Masabih, 3363لم تتمّ دراسته (الألباني)