كتاب الأطعمة
12  
Food
Bulugh al-Maram 1343
Abu Sa'id Khudri (RAA) narrated that the Messenger of Allah (ﷺ) said:
"The (legal) slaughtering of the fetus is included when its mother is slaughtered." Related by Ahmad and Ibn Hibban graded it as Sahih.
وَعَنْ أَبِي سَعِيدٍ اَلْخُدْرِيِّ ‏- رضى الله عنه ‏- قَالَ: قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ "ذَكَاةُ اَلْجَنِينِ ذَكَاةُ أُمِّهِ" } رَوَاهُ أَحْمَدُ, وَصَحَّحَهُ اِبْنُ حِبَّانَ (1758)‏ .‏
Reference : Bulugh al-Maram 1343
In-book reference : Book 12, Hadith 1343
English translation : Book 12, Hadith 1383
Hadith Text
Reference