Sayyiduna Abu Sa'id (may Allah be pleased with him) says: We asked the Messenger of Allah (peace and blessings be upon him) about the fetus in the womb, and he (peace and blessings be upon him) said: "Eat it if you wish."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19489