Sahih Muslim , Book 16, Hadith 4166 (USC-MSA) ⓘ
Abu Huraira reported that among two women of the tribe of Hudhail one flung a stone upon the other causing an abortion to her so Allah's Apostle (may peace he upon him) gave judgment that a male or a female slave of best quality be given as compensation.
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ امْرَأَتَيْنِ، مِنْ هُذَيْلٍ رَمَتْ إِحْدَاهُمَا الأُخْرَى فَطَرَحَتْ جَنِينَهَا فَقَضَى فِيهِ النَّبِيُّ صلى الله عليه وسلم بِغُرَّةٍ عَبْدٍ أَوْ أَمَةٍ .
also referenced under: Book 28, Hadith 48 (In-Book) & Hadith 1681 (Reference)