Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:6:146

And to those who are Jews We prohibited every animal of uncloven hoof; and of the cattle and the sheep We prohibited to them their fat, except what adheres to their backs or the entrails or what is joined with bone. ˹By˺ that We repaid them for their injustice. And indeed, We are truthful.  

And to those of Jewry, that is, the Jews, We forbade every beast with hoof, that is, ˹every animal˺ which does not have divided toes, such as camels and ostriches; and of oxen and sheep We forbade them the fat of them, the thin fat lining the stomach and the fat of the kidneys, save what their backs carry, that is, what ˹fat˺ is attached to it, or, what is carried by, their entrails, their intestines (hawāyā is the plural of hāwiyā’ or hāwiya), or what is mingled with bone, thereof, which is the fat of the rump: these were lawful for them; that, prohibition, We requited them, with, for their insolence, on account of their wrongdoing, as already mentioned in sūrat al-Nisā’ ˹Q. 4:160˺; verily We are truthful, in ˹recounting˺ Our tidings and Our appointed times.
القرآن:٦:١٤٦

وَعَلَى الَّذِينَ هَادُوا حَرَّمْنَا كُلَّ ذِي ظُفُرٍ ۖ وَمِنَ الْبَقَرِ وَالْغَنَمِ حَرَّمْنَا عَلَيْهِمْ شُحُومَهُمَا إِلَّا مَا حَمَلَتْ ظُهُورُهُمَا أَوِ الْحَوَايَا أَوْ مَا اخْتَلَطَ بِعَظْمٍ ۚ ذَٰلِكَ جَزَيْنَاهُمْ بِبَغْيِهِمْ ۖ وَإِنَّا لَصَادِقُونَ  

{وعلى الذين هادوا} أي اليهود {حرَّمنا كل ذي ظفر} وهو ما لم تفرق أصابعه كالإبل والنعام {ومن البقر والغنم حرمنا عليهم شحومهما} الثروب وشحم الكلي {إلا ما حملت ظهورهما} أي ما علق بها منه {أو} حملته {الحوايا} الأمعاء جمع حاوياء أو حاوية {أو ما اختلط بعظم} منه وهو شحم الإلية فإنه أحل لهم {ذلك} التحريم {جزيناهم} به {ببغيهم} بسبب ظلمهم بما سبق في سورة النساء {وإنا لصادقون} في أخبارنا ومواعيدنا.