Rabi'ah (may Allah have mercy on him) said that it reached him that the fine (ghurrah) is valued at 50 dinars or 600 dirhams, the blood money of a woman is 500 dinars or 6000 dirhams, and the blood money of her fetus is one tenth of her blood money. Imam Malik (may Allah have mercy on him) said: Our view is that the fetus of a slave woman is one tenth of its mother's value.
It is also narrated from Sayyiduna Umar bin al-Khattab (may Allah be pleased with him), with a munqati' (broken) chain, that he valued the fine (ghurrah) at 50 dinars.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16427