We asked the Messenger of Allah ﷺ about the fetus found in the womb of a slaughtered animal. He said, "Eat it if you wish, for the slaughter of its mother counts as its slaughter."Abu Abdullah said, I heard al-Kawsaj Ishaq bin Mansur say regarding their statement about slaughter, "It does not fulfill an obligation (madhammah)," that "midhammah" with a kasrah on the dhal comes from dhimam (covenant or obligation), while "madhammah" with a fathah on the dhal comes from dhamm (blame).
حدثنا أبو كريب حدثنا عبد الله بن المبارك وأبو خالد الأحمر وعبدة بن سليمان عن مجالد عن أبي الوداك
سألنا رسول الله ﷺ عن الجنين فقال كلوه إن شئتم فإن ذكاته ذكاة أمه قال أبو عبد الله سمعت الكوسج إسحق بن منصور يقول في قولهم في الذكاة لا يقضى بها مذمة قال مذمة بكسر الذال من الذمام وبفتح الذال من الذم
Sourcing, sahih. Reported by Abu Dawud, Sacrifices, chapter on the slaughtering of the fetus, no. 2827, from the hadith of Mujalid through this route, and Tirmidhi graded it hasan, no. 1476, as did Baghawi. Mujalid was mentioned earlier at no. 11. Yunus bin Abu Ishaq corroborated him, as reported by Ahmad and others, and Ibn Hibban graded it sahih, no. 1077. It has other routes as well.