Is the consumption of specific animal parts, namely the Ghuddah (gland/fatty lump) and the heart valve (udhun al-qalb), permissible?
General Chapter
Al-Mughni
Book of Hunting and Slaughter
Primary text
The consumption of the Ghuddah and the heart valve is disliked (makruh). This ruling is supported by a narration from Mujahid stating that the Messenger of Allah disliked six parts of a sheep, mentioning these two. Furthermore, there is an inherent aversion and revulsion felt by the soul towards these parts. It is believed that Ahmad's dislike stems from this revulsion rather than the specific narration.
Supporting text
Ahmad ibn Hanbal stated regarding the narration mentioning these parts, including the spleen, that it is a repudiated hadith (hadith munkar). He himself stated that he dislikes none of the parts of the sheep, implying permissibility or lack of strong objection, especially regarding the spleen.