Sahih Muslim
Sahih Muslim 1681 a
The Diyah for a fetus; and the Diyah for accidental killing and the ambiguous killing must be paid by the shahiqilah of the killer
Arabic hadith text
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 وسلمبِغُرَّةٍ عَبْدٍ أَوْ أَمَةٍ .
Translation
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.