"The Messenger of Allah ﷺ judged that a Ghurrah male slave or female slave be given in the case of a fetus. The one of the judgement was made against said: 'Should we give something for one who did not drink, not eat, nor cry out to shed a tear, the likes of which is useless?' So the Prophet ﷺ said: 'This is the speech of a poet. Rather it requires a Ghurrah: a male slave or a female slave.'"  

قَضَى رَسُولُ اللَّهِ ﷺ فِي الْجَنِينِ بِغُرَّةٍ عَبْدٍ أَوْ أَمَةٍ فَقَالَ الَّذِي قُضِيَ عَلَيْهِ أَنُعْطِي مَنْ لاَ شَرِبَ وَلاَ أَكَلَ وَلاَ صَاحَ فَاسْتَهَلَّ فَمِثْلُ ذَلِكَ يُطَلُّ فَقَالَ النَّبِيُّ ﷺ إِنَّ هَذَا لَيَقُولُ بِقَوْلِ شَاعِرٍ بَلْ فِيهِ غُرَّةٌ عَبْدٌ أَوْ أَمَةٌ وَفِي الْبَابِ عَنْ حَمَلِ بْنِ مَالِكِ بْنِ النَّابِغَةِ وَالْمُغِيرَةِ بْنِ شُعْبَةَ  

"Two women co-wives, (were fighting), and one of them hit the other with a stone or a tent post, causing her to have a miscarriage. The Messenger of Allah ﷺ judged that a Ghurrah male or female slave should be given for fetus, and he required it from the Asabah of the woman." (Another Chain) for this Hadith [and it is similar to this].  

أَنَّ امْرَأَتَيْنِ كَانَتَا ضَرَّتَيْنِ فَرَمَتْ إِحْدَاهُمَا الأُخْرَى بِحَجَرٍ أَوْ عَمُودِ فُسْطَاطٍ فَأَلْقَتْ جَنِينَهَا فَقَضَى رَسُولُ اللَّهِ ﷺ فِي الْجَنِينِ غُرَّةٌ عَبْدٌ أَوْ أَمَةٌ وَجَعَلَهُ عَلَى عَصَبَةِ الْمَرْأَةِ قَالَ الْحَسَنُ وَأَخْبَرَنَا زَيْدُ بْنُ حُبَابٍ عَنْ سُفْيَانَ عَنْ مَنْصُورٍ بِهَذَا الْحَدِيثِ نَحْوَهُ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ