Authentic
hadith of Sahih Muslim
Sahih Muslim 9
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، حَدَّثَنَا مُحَمَّدُ بْنُ بِشْرٍ، حَدَّثَنَا أَبُو حَيَّانَ التَّيْمِيُّ، بِهَذَا الإِسْنَادِ مِثْلَهُ غَيْرَ أَنَّ فِي رِوَايَتِهِ
" إِذَا وَلَدَتِ الأَمَةُ بَعْلَهَا "
This hadith is narrated to us on the authority of Muhammad b. 'Abdullah b. Numair, on the authority of Muhammad b. Bishr, on the authority of Abd Hayyan al-Taymi with the exception that in this narration (instead of the words (Iza Waladat al'amah rabbaha), the words are (Iza Waladat al'amah Ba'laha), i, e, when slave-girl gives birth to her master.
Reported by Muslim (No. 9).