Narrated AbuSa'id al-Khudri:
I asked the Messenger of Allah (ﷺ) about the embryo. He replied: Eat it if you wish.
Musaddad's version says: we said: Messenger of Allah, we slaughter a she-camel, a cow and a sheep, and we find an embryo in its womb. Shall we throw it away or eat it? He replied: Eat it if you wish for the slaughter of its mother serves its slaughter.