Blood Money due to Causing a Miscarriage
Hazrat Umar (ra) narrates that he once asked the people about the blood money in the case of an abortion. Mughira stated that the Holy Prophet (sa) had said one should free a male or female slave as blood money. Hazrat Umar (ra) then said to bring someone who would corroborate this matter he had just mentioned. Muhammad bin Maslamah confirmed that he was in the presence of the Holy Prophet (sa) and that indeed is what had been said by the Holy Prophet (sa).
(Sahih al-Bukhari, Kitab al-Diyat, Bab Junain al-Mar‘ah, Riwayat No. 6905-6906)
That is, if one is guilty of oppression or cruelty which leads to a miscarriage or if one forces a woman to have an abortion, then that person must give blood money. Whosoever has committed this injustice has to pay the blood money which is to free a male or female slave.