Sahih Bukhari
Blood Money (Ad-Diyat)
Volume: 009 / Book Number: 083 / Hadith Number: 41
Narrated Abu Huraira:
Two women from the tribe of Hudhail (fought with each other) and one of them threw (a stone at) the other, causing her to have a miscarriage and Allah's Apostle gave his verdict that the killer (of the fetus) should give a male or female slave (as a Diya).