Sahih al-Bukhari, Volume 7, Book 71, Hadith 655 (USC-MSA) ⓘ
Narrated Abu Huraira: Two ladies (had a fight) and one of them hit the other with a stone on the `Abdomen and caused her to abort. The Prophet judged that the victim be given either a slave or a female slave (as blood-money). Narrated Ibn Shihab: Sa`id bin Al-Musayyab said, "Allah's Messenger judged that in case of child killed in the womb of its mother, the offender should give the mother a slave or a female slave in recompense The offender said, How can I be fined for killing one who neither ate nor drank, neither spoke nor cried: a case like that should be denied ' On that Allah's Messenger said 'He is one of the brothers of the foretellers
حَدَّثَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ امْرَأَتَيْنِ، رَمَتْ إِحْدَاهُمَا الأُخْرَى بِحَجَرٍ فَطَرَحَتْ جَنِينَهَا، فَقَضَى فِيهِ النَّبِيُّ صلى الله عليه وسلم بِغُرَّةٍ عَبْدٍ أَوْ وَلِيدَةٍ. وَعَنِ ابْنِ شِهَابٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَضَى فِي الْجَنِينِ يُقْتَلُ فِي بَطْنِ أُمِّهِ بِغُرَّةٍ عَبْدٍ أَوْ وَلِيدَةٍ. فَقَالَ الَّذِي قُضِيَ عَلَيْهِ كَيْفَ أَغْرَمُ مَنْ لاَ أَكَلَ، وَلاَ شَرِبَ، وَلاَ نَطَقَ، وَلاَ اسْتَهَلَّ، وَمِثْلُ ذَلِكَ بَطَلْ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّمَا هَذَا مِنْ إِخْوَانِ الْكُهَّانِ " .
also referenced under: Book 76, Hadith 74 (In-Book) & Hadith 5759 (DarusSalam)